Category: The Basics

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What is a “Socio-Technical System?”

Lately the term “socio-technical system has been starting to show up more and I thought this would be an opportunity to weigh in on what I think it means.

Though the concept has been around since at least 1951 (see below), I think I have tended to “bleep over” the term as jargon without giving it a lot of thought. I don’t think I am alone in that.

People who try to describe the meaning tend to describe a system “that integrates the social and technical aspects” or words like that.

I would posit that it goes much deeper, and we “bleep over” the concept at our peril if we want our organizations to function well.

The Origin of Social-Technical Theory

*Up through the 1940s, coal mining in the UK was largely pick and shovel work aided by drills and, sometimes, explosives. A work crew typically consisted of three to half a dozen men (and they were all men) who were task organized to strip the coal off the seam face, shovel it into mining carts, and move those carts to the transport system.

These teams were distributed through the mine, and because the distance and working conditions really precluded a lot of supervision, the teams largely oversaw their own work.

Since each team worked independently, the system as a whole could easily accommodate the simple fact that in some spots the coal is harder to dig out than in others.

(If you want to get more of a feel for the work and working conditions, check out the photos in this Daily Mirror article: https://www.mirror.co.uk/news/real-life-stories/britains-last-deep-coal-pit-7000879)

The work also met every definition of “difficult, dirty and dangerous.” That work environment, though, created a social bond among the team members as they worked together to accomplish the task of “mining coal.”

The system was not without its problems, however. The social structure was built around loyalty to the small work team. When “trams” (coal carts) were in short supply, for example, the “trammers” would horde carts to optimize their team’s performance at the expense of other teams being limited by the number of carts available.

This all changed shortly after WWII.

The Long Wall Method

In the late 1940s the industrial engineers turned this craft production system into a factory system with the tasks divided between three shifts.

Long Wall Mining Shift Schedule

The process would begin on the evening shift. They would drill blast holes along the top of the coal seam, then dig an undercut about six inches high at the base to allow the blast to drop the coal. This would be done along a long (up to a couple of hundred meters) face of the coal seam. (Hence the name “long wall mining.”)

Meanwhile another team would break down the conveyor system that ran parallel to the coal face in preparation for moving it forward to position it for removing the loose coal.

Then night shift had two teams. One would extend the “gateway tunnels” at either end of the coal face. This was a crew of 8 men. Simultaneously another team would rebuild the conveyer in the new position.

Once all of this work was done, the shots would be fired, dropping the coal into a pile along the coal seam face.

Day shift would take the loose coal and transfer it to the conveyor system to be taken out of the mine.

Yes, this is an oversimplification, but it suffices for this discussion.

On paper, this process was far more efficient.

In practice, though, things did not go smoothly.

“Isolated Dependence”

A “filler” loads loose coal onto the conveyor.

Looking at this work breakdown, the first two shifts are prep work. Only the day shift, the “fillers,” actually get the coal out of the mine. But their success was entirely dependent on how well the first two shifts did their jobs. If everything was not “by the book” then the fillers would be significantly hampered. Since they were paid by the ton of coal extracted, there was more at stake than just a sense of accomplishment.

If the previous shifts ran into problems – such as a “shot” that failed to separate all of the coal from the roof of the seam, or harder material, etc. these inconsistencies slowed down the “fillers” and made them less successful. If the conveyor was not completely or correctly assembled, they could not begin work until this was corrected.

Because management pressure was on the key performance indicator – the rate of coal extraction, and because the “fillers” were paid by the ton of coal extracted, this created resentment between the “fillers” and crews on the other two shifts, as well as conflicts with management which the working crews began to regard (with ample evidence) as disconnected from the realities of their work.

Then, if the “fillers” were too far behind at the end of their shift, that would delay the start of the next cycle and things spiraled downward from there.

Productivity plummeted. The study I am citing here was commissioned to determine why. Their conclusion, in short, was that the new work organization was built around the paradigm of a factory assembly line without regard for the variation of geology. Success of the three shift cycle depended on each shift meeting a rigid schedule, but that schedule did not account for the simple fact that coal seams are not uniform.

In addition, the work organization destroyed the social structure of the mining crews. Their success was dependent on people they no longer saw or interacted with. The oncoming filler shift, in particular, would be confronted with all of the obstacles left by the previous two shifts. As their resentment for being unsupported built, their willingness to put in any extra effort dropped to zero.

Again – this is an oversimplification. If you want to read the full paper there is a link at the end of this post.

Oversimplification or not, however, the effect was stark. The social structure of the organization was driven to fundamentally change by alternations in the technical structure of the work. Quoting from my source material* :

The effect of the introduction of mechanized methods of face preparation and conveying, along with the retention of manual filling, has been not only to isolate the filler from those with whom he formerly shared the coal-getting task as a whole, but to make him one of a large aggregate serviced by the same small group of preparation workers.

The work design was based on a mechanistic view that ignored the how the social structure impacted the performance of the team.

The Mechanistic View

Installed in the year 1410, the Prague Astronomical Clock is the third-oldest in the world, and the oldest still in operation. (Prague is an awesome city, by the way.) Photo © Steve Collins, used under Creative Commons license via Flickr and Wikimedia

By the turn of the last century we thought we had the ways of the universe pretty well understood. Hundreds of years (thousands of years in some early societies) earlier we had the ability to predict the motion of the stars and planets – to the point that we could build machines that were analogues of their movements.

The prevailing model in psychology was classical conditioning which, in essence, said that behavior is an almost algorithmic learned response based on previous positive and negative reinforcements.

This mechanistic model leads to a belief that we can carefully design the machine and people’s work within the machine can be carefully designed and shaped through rewards and consequences.

And as long as everything, and every one, works as they are supposed to, it’s all good. If a machine malfunctions, we fix it. If people don’t follow procedures, we “motivate them” with incentives.

This model prevails even today and even colors our teaching of continuous improvement. One of the places we need tend to inherently adopt a mechanistic view is when we use the word “system.”

The Mechanistic View of “System”

In today’s world, when people talk about “the system” they are often referring to an information system of some type. Common examples are an Enterprise Resource Planning (ERP) system, or an Electronic Health Records (EHR) system. And these information processing systems do tend to shape how the organization functions, for better or for worse.

So when people talk about a “system” I think the reflex is to think of the system as a machine that is carefully designed, built, and tuned to perform a particular function or behave in a particular way.

And people tend to assume that once it is working, it will continue to work so long as it is maintained to be kept in the same condition.

This thinking often extends to the people as well. They are often viewed as servicing “the system” – providing it with information, and following the instructions it gives. (this is particularly true in ERP / MRP environments.) Everything is part of a machine, and as long as everyone does their jobs, and the equipment functions as intended, then it all works.

In practice, though, these systems tend to isolate people from one another, or into small single task groups in much the same way as happened in the coal mine.

The Mechanistic Paradigm at Work

The reason I explained all of this is so we can look at our own workplaces through this lens. The crucial question is: Do the work structures and systems support or hamper the social structure of effective teamwork?

Let’s take another look at those ERP or EHR systems. Without the interaction with and the interaction between the people who use them, those “systems” are inert. They do nothing. The mechanistic paradigm, though, tends to look at people as performing a task to serve or enable the system. Instead, we should look at the information system as a tool that should enable people do to a job they otherwise could not.

On the Shop Floor

The sign says “Hearing Protection Required.” The reality is that it is impossible for more than 3 or 4 people to have a conversation on the shop floor, as they are shouting to be heard. The final operation is highly automated, each machine has two people working in isolation, even from one another for the most part. In addition, the machine crews are isolated from one another, both by distance and by the noise level.

The machine operator is measured on his hourly rate of production vs. a standard expectation.

Meanwhile at the opposite end of the building, the production scheduling team works to carefully orchestrate the availability of packaging materials, purchased components, as well as scheduling each phase of production so work is available for the next step.

They do all of this with their ERP system and every day they create orders to issue components, production orders to the various areas in the shop, and purchase orders to their suppliers. They adjust priorities at least daily, based not only on lead times and changing customer requirements, but also on the reality of what has actually been produced, or not, up to this point. Items are early, they are late, production runs ahead, though mostly behind, the scheduled intent.

Everyone is frustrated. The planner / schedulers because production never seems to make what they planned. And production because scheduling never seems to schedule things that can be made with the available materials, etc. Shortages are discovered, an ad-hoc plan is created to keep things moving – but that may well consume components that were earmarked for something later in the week, and the cycle continues.

To make things even more interesting, the planner / schedulers are using production capacity numbers that they know are higher than reality. They are under pressure to put in unrealistic numbers because the real numbers would make the site’s cost estimates too high and attract scrutiny from corporate.

This means “the system” produces schedules that cannot be met by actual production even if everything else works, which, in turn, means continuously over-promising, under-delivering, and adjusting priorities.

Though the work is very different, we have a social structure not unlike the British coal mine.

This is what “isolated dependence” looks like in today’s work environments. If you are seeing blame casting and conflict between groups who are dependent on one another you likely have a similar situation in your organization.

Counter-Productive Response

Unfortunately the typical management response is to increase monitoring, control, incentives, “accountability” on individual parts of the process rather than looking at the entire system.

These things tend to increase the sense of isolation and frustration as they can create a sense of victimhood between the separate groups. For example, in the above situation everyone there told me that they used to have pull system on the factory floor, and it had worked really well, operated predictably, and gave them a lot more insight into what was actually happening. But some time ago a new management team wanted to track everything in the computer “for control” so the current system was installed.

Ironically, that management team had turned over, but for whatever reason people were very reluctant to return to what they knew had worked in the past. But I digress.

The Implications

Human beings are innately social. In any organization, or casual group trying to get something done, people develop webs of social networks. The more they can interact, the more everyone stays on the same page.

There are a few things we can do to reinforce this.

Bring People Together

And I mean bring them together literally, physically. Rather than just confronting one another in the morning meeting, have them literally work side-by-side with the common goal of a smooth process.

Have a Shared, Objective, Truth

Eliminate the need to ask or query “status.” Eliminate the one person who knows the big picture. Get the truth out there in the open– literally, physically. (See a trend here?)

In a well managed operation I nearly always find rich “information radiators” that are an inherent part of the process itself (rather than being a display of information that was input just so it can be displayed). This information is not simply a passive display. It is actively used by the people doing the work to they know where they stand, what comes next, and when they need to raise a concern.

A classic example of this is a heijunka or load-leveling box. The cards, or work orders, or pick tickets, are placed in slots that are based on the time that work is expected to start if everything is working normally. Thus it is insanely easy to spot if something is getting behind, long before it would show up in the daily production report. Menlo Innovations’ Work Authorization Board does the same thing.

The goal is for conversations to be about “How do respond” rather than discussions about “what is happening.”

This is really the purpose of nearly every “lean tool” — to ask, and answer, two key questions:

  • What should be happening?
  • What is actually happening?

and then invite a conversation about any difference between the two.

The fact that “we have made 234 widgets” is meaningless without a point of comparison of “how many widgets should we have made up to this point?” The goal is to invite curiosity and foster actual conversations, and eliminate debates about what should be and what actually is.

But more often, this is what I most find lacking. People well tell me they can easily query status, look up individual orders, but even then there is rarely a timely comparison between “nominal” and “actual” in that information. Even if status can be queried, there is often a lack a “compared to what?” Or worse, the status is abstracted from reality, for example, measured in “earned hours” or some other financial metric. Often “ahead or behind” is not known until the end of the day… or the week, or sometimes even the month. The greater the lag, the bigger is the scramble to make up production with overtime.

So here is question #1 for you: If I were to ask you, right now, “Is this operation ahead or behind?” could you tell me? Can the people who are actually doing the work tell me? And by “tell me” I mean immediately, without having to go research or launch some kind of query.

Another version of this question is, “How far behind do you allow yourself to get before you actually know there is a problem?”

Social-Technical

So what we have is a technical aspect of a process that is deliberately designed to support meaningful social interactions between the people responsible for carrying out the work and accomplishing the overall task… as a team. We bring people together rather than isolating them from one another.

This is hard – Yup.

And these principles run against management “best practices” that have been taught since the 1920s.

Where to start? If any of this seems impossible, work on trust. Think about this – Why would people be reluctant to display an objective truth without the ability to first qualify it?

Why would people be reluctant to create a true dependent relationship with another department?

All of these things come down to a culture of self-defense because people feel a need to protect themselves from something or someone. Even if that force is long gone, the effects of leadership-by-fear linger, sometimes for many years, unless you take proactive and direct steps to eliminate that fear.

So… if this seems hard, work on that first.

* The original study of the interplay between social structure and work organization and technology looks to be the 1951 paper “Some Social and Psychological Consequences of the Longwall Method of Coal-Getting: An Examination of the Psychological Situation and Technological Content of the Work System” by E.L. Trist and K.W. Bamforth

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“95 Thesis” on Kaizen Events and TPS

Once again I am going through old files. These are some notes I wrote back in 2005 that I thought might be interesting here. Looking back at what I was writing at the time, I think I was thinking about nailing these points to a church door somewhere in the company. That actually isn’t a bad analogy as I was advocating a pretty dramatic shift in the role of the kaizen workshop leaders.

All Saint’s Church – Wittenberg, Germany

This was written four years before I first encountered Toyota Kata, and reflected my experience as a lean director operating within a $2billion slice of a global manufacturing company. What reading Toyota Kata did for me was (1) solidify what I wrote below, and (2) provided a structure for actually doing it.

Perhaps this will create some discussion. If you are interested in getting a Zoom session together around it, feel free to hit the Contact Mark in the right sidebar (or just click it here) and drop me a note. If there is interest, I’ll put something together.

Kaizen Events

Kaizen events (or whatever we want to call the traditional week-long activity):

  • Can be a useful tool when used in the context of an overall plan.
  • Are neither necessary nor sufficient to implement [our operating system].1
  • There are times when any specific tool is appropriate, and there are no universal tools. Kaizen tools included.
  • (Our operating system) is, by our own model, the “Operational Excellence” pillar of (our business system). This is keyed in leadership behavior, not implementation of tools. The tools serve only to provide context for leaders to rapidly see what is happening and the means to immediately respond to problems.
  • Thus, focusing on implementing the tools of TPS (takt time, flow, pull, etc) outside of the immediate response and problem solving context is an exercise which expends energy and gains very little sustainable change. This is independent of whether it is done in a week-long intense event or not.
  • However, in my experience, organizations which take a deliberate and steady approach implementing have had more success putting the sustaining mechanisms into place. While it is sometimes necessary to bring teams together for a few days at times to solve a specific problem, or to develop a radically different approach, these efforts tend to be more focused than a typical kaizen week I see.
  • When the kaizen week is scheduled first, and then the organization looks for what needs improving, this is a symptom of ineffective use of the tool.
  • In general, a kaizen, whether it is a week, a month, or even just a few minutes, must be focused on solving specific problems which are impeding flow or are barriers2 to the next level of performance. Without this focus, there is no association with the necessities of the business, and no context for the gains.
  • There are a few simple countermeasures which can be applied to a kaizen week activity that focus the participants much more tightly on learning the critical thinking.

Improvement can, and must, take many forms. A week-long kaizen activity is but one. It is expensive, time consuming, disruptive, and should be used deliberately only when simpler approaches have failed to solve the problem.

Classes and Courses ≠ Teaching and Learning

Bluntly, even though we preach PDCA and say we understand it, we are not applying PDCA in our education approach.

Some fundamental tenets:

  • All of our teaching should be contextual and focused on what skill or knowledge is required to clear the next barrier to flow or performance.
  • The above does not rule out teaching fundamental theory, but fundamental theory must be immediately translated into actions and put into practice or it will never be more than a nice discussion.
  • The vast majority of our teaching should be experiential, and based in real-world situations, solving actual problems vs. examples and contrived exercises.
  • We want to move our teaching toward an ideal state (a True North in our approach) where it is:
    • Socratic – focusing people on the key questions.
    • Experiential – learn by application to solve real problems and thus gain experience and confidence that the concepts translate to the real world.
  • Thus, education and training is but one tool used by leadership to help people clear the barriers and problems that block progress toward higher levels of performance.
  • As far as I can determine, the “Toyota Way” of teaching is similar to this model.

Content

The content of training is as critical as the way it is delivered.

Our objective is to shift people’s thinking, and in doing so, shift their day-to-day behavior as they make operational decisions. The target audience for all of our efforts are the people who make decisions which impact our direction and performance. This is anyone in any position of leadership, at any level of the company – from a Team Leader on the shop floor to the CEO.

The key is to embed the structure of applying PDCA into all of our content. For example:

  • The “rules-in-use” in Steven Spear’s research (Decoding the DNA of the Toyota Production System and other related publications).
  • Every tool, technique, etc. we teach, or should teach, is some application of the above. (The rules-in-use include problem detection, response, and problem solving.) I have yet to encounter an improvement tool or technique that does not fit this model.
  • This approach fundamentally re-frames the concept of “problem” and what should be done about it.
  • The Toyota Production System (in its pure state) is a process which delivers a continuous stream of problems to be solved to the only component of the system that can think – the people. This is how people are engaged, and this is what makes it a “people based system.” Leave this out, and “people based system” is just hollow words. Nearly every discussion talks about how important people are, but then dives right into technical topics without covering how people are actually engaged — outside the context of a week-long kaizen.

The Role of “Workshop Leaders” in the (Continuous Improvement Office)

No one has disputed the critical make-or-break role played by the line leadership, not only in implementation, but even more so in sustaining.

Workshop leaders are generally taught to plan and lead workshops. The emphasis is on the week-long workshop logistics; on presenting modules in classroom instruction; and on the skills to facilitate a team through the process of making rather dramatic shop floor improvements.

In a typical (not saying it happens here) implementation scenario, it is the workshop leaders who go to the work area, do the observations (usually without a lot of skilled mentoring, and usually just to collect cycle times); build the balance charts and combination sheets; plan what will be changed; how it will be changed, set objectives, targets and boundaries.

They are the most visible leadership of the teams during the week, and they are the ones tracking and pushing follow-up and completion of open kaizen newspaper items.

The effect of this (which is fairly consistent across companies) is:

  • The standard work tools are something workshop leaders use during improvement events.
  • Cycle times, observations, and looking for improvement opportunities is something that is the domain of the workshop leaders.
  • Actually guiding the team members through the problem solving process is the job of the workshop leaders.
  • The supervisors and managers are there as team members, in order to learn by participation, from this outside expert.

The question is: Who is responsible to coach the line leaders through the process of handling the problems that the TPS is designed to surface in operation?

Once the basic flows are in place, there will be a stream of problems revealed. Those problems will either be seen or not seen. IF problems are seen, they will either be dealt with quickly, following good thinking, or they will be accommodated so they go back to being unseen. This is a critical crossroad for the organization…. and it is the behavior of the first and second line leaders, and the support they get from their leaders, that most influences whether the system backslides or continues to get better and better.

IF problems are seen, they will either be dealt with quickly, following good thinking, or they will be accommodated so they go back to being unseen.

Note: There is not middle ground. One-piece-flow really can’t sustain in a stable state. It is either improving or getting worse. It isn’t designed to stay still, and it won’t. Continuous intervention is required for stability, and that intervention is what improves it.

Who is teaching the leaders to do this?

Each leader must have a coach, by name, who can, and will, always challenge his thinking and his solutions to problems against a specific thinking structure.

My view is this is the primary role for the Kaizen Promotion Office.

The way to do this is through application of a few core skills, and skills can be taught.

We should:

  • Include this vital role into the expectations of a “workshop leader” – to take them closer to being “coordinators” in the Toyota factory start-up model.
  • Provide these “coordinators” with a specific support process so they know that they can quickly get assistance if they feel they are in over their heads.
  • The role of that assistance is not to step in and solve the problem. It is to take the opportunity to teach both the workshop leader and the area manager by guiding them through solving the problem.

My experience with this concept is that teaching these skills to someone is not as difficult as most people assume. The basics of observing and seeing flows can be taught over a few days to someone who is motivated to learn. The skill of teaching by asking questions can be accelerated from the “pure” method by telling them what is being done in why. “This isn’t about the answers, it is about learning the questions.”

Application and good teaching can easily be verified by checking the leader’s (the student’s) level of skill and behavior. (The senior teacher checks the teacher by checking the student… just as the area supervisor checks the Team Leader’s teaching by verifying the standard work on the shop floor.

None of this is an advanced topic. These are the basics. Once a good context is established in people’s minds, my experience suggests that the Toyota system is no longer counter-intuitive. The tools and techniques that, at first, seem alien now make sense.

——–

1 By this I meant to shift the operating culture to one that inherently supports continuous improvement.

2 In Toyota Kata language, we would say “obstacles.” I had used the term “barriers” up to that point.

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Takt Time: How Slow Can You Go?

A long, long time ago – in the days when computer programs were coded as holes in punch cards – I was in ROTC* in college. Twice a year we had a “PT” (Physical Training, I think) test that consisted of measured performance on five “events.” One of those events was a 2 mile run. To get a maximum score of 100 points, the participant had to complete the 2 mile run in 14 minutes and 9 seconds. Why? I have no idea. But that was the way it was.

Yes – this old school stopwatch reads exactly 42 seconds.

My buddy John and I enjoyed running, and would often work out together. Our school was in Potsdam, New York, a place known for rather brutal winters, so we ran on a 1/10 mile indoor track.

We practiced the PT test. John would track our total time for 2 miles (20 laps around the 1/10 mile track). I would measure lap times. Since 14 minutes is 840 seconds, we knew that if we could consistently make 42 second laps, we would complete two miles in 14 minutes, and get the maximum score with 9 seconds to spare.

The track had hash marks at each quarter point, so we knew we had to hit quarter 1 between 10 and 11 seconds, half way at 21, the 3/4 mark between 31 and 32, and the lap at 42. We would check and adjust our pace accordingly, striving to hit exact 42 second laps every time.

To be clear, we could hold that pace many times further than 2 miles. It wasn’t a matter of conditioning. We weren’t going all out. We were going fast enough. And that was the point.

When we took the test, other cadets were going all out, passing us, and turning in much faster times. Others would try to “pace themselves” and then sprint as fast as they could for that last lap. As a general rule, although the instructors were calling out elapsed times as people went by, these cadets weren’t all that aware of the speed they had to hold. They were just going as fast as they could.

Meanwhile, John and I, running together, and tracking our cycle times (lap times) vs the takt time (42 seconds / lap) would come in at pretty much exactly 14 minutes and get the same score as everyone who had finished ahead of us: 100 points.

After our timed run was done, we would keep running, offering encouragement and pacing for those cadets who were struggling a bit. Everyone finishes, nobody left behind.

A couple of the instructors were curious why we didn’t go for a faster time. And many times we did when we were just working out. We were capable of breaking 12 minutes – not competitive times in a track meet, but respectable. The simple fact was that going faster wasn’t necessary to accomplish the goal.

Takt Time and Cycle Time

This is the whole point of having a takt time. It answers the question, “How fast must we go?” It doesn’t answer “How fast can we go?” nor does it answer “How fast should we go?” I fact, John and I could have run those laps almost (but not quite) half a second slower than we did – which would have eaten into the 9 second buffer we established. Aside from making the math easier, that buffer also gave us a small margin for even something as bad as taking a stumble and standing back up. Also, of course, we could make up 5-10 seconds a lap if we really had to. But we never did. Time: 14:00. We were very consistent.

Rate vs. Output

I encounter a lot of production managers who are so conditioned to focus on the daily output that they don’t even think about the critical factor: How fast are you running vs. how fast do you need to run? In other words what is your rate of output vs. your takt time?

Instead they tend to, at best, count units of output without really paying attention to the time interval between one and the next. In the worst case many units are started at once, and people swarm from one operation to the next during the day – the equivalent of that mad sprint trying to make up as much time as possible. They don’t really know if they will succeed or not until the end of the day (or month!).

It Isn’t a Race

The “just” in “just-in-time” is “just enough resources” to “just make the output you need” in any given time interval. As the operation is streamlined, the same effort is able to accomplish more. Where to put that additional capacity (which costs nothing additional since it has been there all along) to create more value should be the challenge the organization is trying to meet.

My experience has been that managers and leaders often struggle to adopt this “rate” mindset and let go of chasing an inventory number. In the words of the late great philosopher Kenny Rogers – “There’ll be plenty of time for counting when the dealings done.”

*ROTC (Reserve Officers Training Corps) is a U.S. program where college students can earn a commission in the U.S. Armed Forces while earning their degree.

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Reflections and Lessons From 1997

MONDAY: 2 PERS 1 MACHINE. TODAY: 1 PERSON 2 MACHINES

On a Thursday afternoon in the summer of 1997 I sent that pager message (remember pagers?) to Rick from the factory where I had spent a week working with Mr. Shimura of Shingijutsu and Reiko, his interpreter.

I knew that Rick would be wrapping up a class teaching the basics of kaizen events to a group of suppliers and if I were lucky, he would see the pager message and use it as a reinforcement to the participants. Rick and I usually alternated teaching that class, sometimes we taught it together. We were good work partners, finishing each others’ sentences and the mutual respect was very high.

I was on-site at another supplier. We were there to help them take some first steps toward “lean production.” Our goal, at least the idea, was that we would work through the process of making significant improvements with the thought that they would learn enough to try it themselves.

This was not my first visit – the episode with Mr. Iwata that I relate in my third post to this blog had happened there a couple of months earlier, and that visit had resulted in my company offering up Mr. Shimura’s time on our dime.

This may well have been “an offer they couldn’t refuse” and I’m not sure everyone there saw it as help. We were from their 800 pound gorilla customer, they had trouble making on-time deliveries, and sometimes that isn’t the kind of help that you want. From their perspective their biggest customer had people who knew their way around a factory spending days on their shop floor and, most certainly, ascertaining how much more productivity was possible if only, well, the buyers squeezed them hard enough. It didn’t really work that way, but it had worked that way in the past, so who could blame the suppliers for thinking this was a more sophisticated way to audit them?

Anyway, we had worked through the week to carefully look at the tasks involved to unload, load, and machine a single part on a large linear milling machine. Mr. Shimura was there asking questions, not so much from curiosity but to direct my eyes. I’m sure he already knew the answers. As we dug into the timing, it became clear that there was enough operator waiting time as the part was being milled that a single operator could, theoretically, unload and load an adjacent machine – operating two of them at once.

So we carefully worked out the chorography required to make it work, and on Thursday mid-day it all came together. The work was flowing, the parts were flowing. It was really a thing of beauty.

Friday morning we would report out the week to management, and Friday afternoon I would head to the airport to go home to Seattle.

But I had some worries as well. Although the company President, and the VP of Operations were supportive, their support was along the lines of welcoming everyone into the plant, making it clear they were happy to see us, attending the final report-out and endorsing our efforts.

I was still pretty knew at this. I was making the transition from teaching classes and running simulations to making real change in real factories (that weren’t mine!). I was really fortunate to have a lot of 1:1 time with Mr. Shimura and Reiko. I asked questions, he patiently taught me how to use the standard work combination sheet, and other nuances of kaizen and flow production. I got a lot more out of that week than the supplier did simply because I was there spending time with Mr. Shimura and taking advantage of every second I could. I had 1:1 time because none of the supplier’s managers were seeking him out to learn from his vast experience.

Some quotes I will never forget: “If I see something is hand written, then I know at least one person has read it.”

“If parts that are in tolerance don’t fit, it is a problem with the tolerances.”

(Walking through the shop) “Does this company lose a lot of money?” Reply: “No, they are very profitable.” “Then their prices are too high.”

In the end, though, I am equally certain that come Monday morning the work sequence we had so carefully worked out – at great expense to my company for my time, my travel, Mr. Shimura, his interpreter, and others – was never repeated again.

Why not?

Well, we can all blame “management commitment” because that is really easy to do. But I put equal weight on our paradigm of improvement at the time. The idea that, in 4 working days we could institute a change that flew straight against the operational and cultural norms of the company and expect it to last any longer than until we were out the door was, well, ludicrous.

Why should we expect anything different?

It is ludicrous in any company, whether this work is being brought in from outside or internally generated.

The people who have to manage the daily work, whether they were involved in this exercise or not, have no paradigm for dealing with the myriad of issues that are bound to be surfaced after we pulled all of the buffers out of the material and the time. Yes, it can work, IF we understand the conditions required for success, and IF we pick up right away when those conditions aren’t there and IF we respond to fix it very fast. Then, yes, it can work.

It will be more time and trouble than it was before, though, unless the next things are also done.

For at least some of those issues – maybe not all of them, but always working against a couple of them – seeking out why those issues happened and dealing with the causes.

Just to keep this tiny two-machine “work cell” operating in this large factory would have eventually engaged every support system they had.

That’s the whole point, actually, of a model line. It isn’t building the model line. It is what you have to fix in your systems to keep it going.

Many years later I spent a week on another company’s shop floor with their internal kaizen team and getting an andon / escalation process up and running was the only thing we were working on that week. That process is just as important, if not more, than the baseline work of flow. Because without it, your flow will fall apart.

This is the part of the process that engages people. Putting in the baseline process is the easy part. Fielding the problems that flow surfaces – that takes changing the day-to-day routine in the workplace, and is a lot harder. That is where the culture change comes into play. Actually it is more than engaging people. It engages specific people: This is the part that must engage the leaders. They must lead, guide and coach process of working through all of the issues so stability can be reestablished. Then challenge the team to get to the next level.

But all of that is what I know now. I had the knowledge back then, but not the deep understanding.

So – I am thankful for that week because my understanding of what I had been teaching for months easily doubled… twice in those few days.

I was back there a few more times, they even gave me a badge (which I still have somewhere) so I could let myself in. One time I spent two straight weeks there. They were good people.

But we were applying work to the technical systems, and never really dealing with their default responses to problems, their culture, the way they went managing their daily work.

I know so much more today it is actually humbling to write this. And I still have a lot to learn. We all do.

The company I was working in? They were sold, and sold again. I think they are still in business, but I wouldn’t know anyone there.

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A Lean Leadership Pocket Card

I was going through some old files and came across a pocket card we handed out back in 2003 or so. It was used in conjunction with our “how to walk the gemba” coaching sessions that we did with the lean staff, and then taught them to do with leaders.

There is a pretty long backstory, some of it is summarized in Earl’s recollection on this old post: Genchi Genbutsu in a Warehouse as well as here: The Chalk Circle – Continued.

A lot has happened, a lot has been learned since then. Toyota Kata has been published, and that alone has focused my technique considerably (to say the least).

Nevertheless, I think the elements on these little cards are valuable things to keep in mind.

With that being said, a caveat: Lists like this run the risk of becoming dogma. They aren’t. There are lots of lists like this out there, and the vast majority are very good. The key here is something that a leader or team member can refer to as a reminder that may bias a decision in the right direction. It is the direction that matters, not the reminders.

Fundamentals

The fundamentals are based on the “Rules-in-Use” from Decoding the DNA of the Toyota Production System, a landmark HBR article by Steve Spear and H. Kent Bowen. The article, in turn, summarizes (and slightly updates) Spear’s findings from his PhD work studying Toyota.

A. All work highly specified as to content, sequence, timing, and outcome.

B. Every customer-supplier connection is simple and direct.

C. The path for every product is simple and direct.

D. All improvements are made using PDCA process.

What we left off, though, is that in each of those rules there is a second one: That all of these systems are set up to be “self diagnostic” – meaning there are clear indications that immediately alert the front line people if:

  • The work deviates from what was specified.
  • The connection between a customer and supplying process is anything other than specified.
  • The path a product follows deviates from the route specified.
  • Improvements are made outside of a rigorous PDCA (experimental) process.

In other words, the purpose of the rules is to be able to see when we break them, or cannot follow them, so we trigger action.

To put this into Toyota Kata-speak – every process is set up as a target condition that is being run as an experiment – even the process of improvement itself!

Every time there is a disruption – something that keeps the process from running the way it is supposed to – we have discovered an obstacle. That obstacle must first be contained to protect the team members and community (safety) and to protect the customer (quality). Then goes into the obstacle parking lot, and addressed in turn.

If you think about it, the Improvement Kata simply gives us much more rigor to (D).

This ties to the next sections.

Key Leadership Behaviors

Note that this is behaviors. These are things we want leaders to actually strive to do themselves, not just “support.” It was the job of the continuous improvement people to nudge, coach, assist the leaders to move in these directions. It was our job to teach our continuous improvement people how to do that coaching and assisting – beyond just running kaizen events that implement tools.

A. PDCA Thinking

Today we would use Toyota Kata to teach this. But the same structure drove our questioning back then.

B. Four Rules:

1. Safety First

Even though this should be obvious, it is much more common that people are tacitly, or even directly, asked to overlook safety issues for the sake of production. I remember walking through a facility with a group of managers on the way to the area we were going to see. Paul stopped dead in his tracks in front of a puddle on the floor. He was demonstrating just how easy it was for the leadership to walk right past things that should be attended to. And in doing so, they were sending the message – loud and clear in their silence – that having a puddle on the floor was OK.

2. Make a Rule, Keep a Rule

This is a more general instance of Rule #1. But the it is more subtle than it may seem on the surface. Most people immediately interpret this as enforcing organizational discipline, but in reality it is about managerial discipline.

Nearly every organization has a gap between “the rules” and how things really are day-to-day. Sometimes that gap is small. Sometimes it is huge.

Often “rules” are enforced arbitrarily, such as only cases where a violation led to a bigger problem of some kind. Here’s an example: Say your plant has a set of rules about how fork trucks are to be operated – speed limits, staying out of marked pedestrian lanes, etc. But in general the operators hurry, cut a corner now and then. And these violations are typically overlooked… until there is some kind of incident. Then the operator gets written up for “breaking the rules” that everyone breaks every day – and management tacitly encourages people to break every day by focusing on results rather than process.

When we say “make a rule / keep a rule” what we mean is if you aren’t willing to insist on a rule being followed consistently, then take the rule off the books. And if you are uncomfortable taking the rule off the books, then your only option is to develop something that you can stand behind. It might be simple mistake proofing, like physical barriers between forklift aisles and pedestrian aisles. But if you are going to make the rule, then find a way to keep the rule.

Do you have “standard work” documents that are rarely followed? Stop pretending you have standards or rules about how the work is done. Throw them away if you aren’t willing to train to them, mistake proof to them and reinforce following them.

3. Simple is Best

Simply, bias heavily toward the simplest solution that works. The fewest, simplest procedures. The simplest process flow. Complexity hides problems. “Telling people” by the way, is usually less simple than a physical change to the work environment that guides behavior. See above.

4. Small Steps

Again, Toyota Kata’s teaching covers this pretty well today. The key is that by taking small steps, verifying that they work, and anchoring them into practice before taking the next ensures that each step we take has a stable foundation under it.

The alternative would be to make many changes at once in the name of going faster.

We emphasized here that “small steps” does not equal “slow steps.” It is possible to take small steps quickly, and we found that in general doing so was faster than making big leaps. Getting big changes dialed in often required backing out and implementing one thing at a time anyway – just to troubleshoot! See “Gall’s Law” which states:

A complex system that works is invariably found to have evolved from a simple system that worked. A complex system designed from scratch never works and cannot be made to work. You have to start over, beginning with a working simple system.

John Gall, author of Systematics

and sums this up nicely.

C. Ask “Why, what, where, when, who, and how” in that order.

Here we borrowed the sequence from TWI Job Methods. The first two questions challenge whether a process step is even necessary: Why is it necessary? What is its purpose? To paraphrase Elon Musk, the greatest waste of time is improving something that shouldn’t even exist.

Then: Where is the best place? and When is the best time? These questions might nudge thinking about combining steps and further simplifying the process.

And finally we can ask Who is the best person? and “How” is the best method? The key point here is until we have the minimum possible steps in the simplest possible sequence, and understand the cycle times, it doesn’t make sense balance the work cycle or work on improving things.

Come to think about it – perhaps we should ask “How?” before we ask “Who” since improving the method will change the cycle times and may well inform out decisions about the work balance. Hmmm… I’ll have to think about that. Any thoughts from the TWI gurus?

D. Ask Why 5 Times

Honestly, this was a legacy of the times. Unfortunately it suggests that you can arrive at a root cause simply by repeatedly asking “Why?” and writing down the excuses answers that are generated. In reality problem solving involves multiple possible causes at each level, and each must be investigated. I talked about this in a post way back in 2008: Not Just Asking Why – Five Investigations.

E. Go and see.

Go and see for yourself. Taking this into today’s practice, I think it is something that the Toyota Kata community might emphasize a little more. We tend to ask the question “When can we go and see what we have learned…?” but all too often the answer to “What have you learned?” is a discussion at the board rather than actually going and observing. Hopefully the board is close to where the improvement work is being done. Key point for coaches: If the learner can’t show you and explain until you understand, it is likely the learner’s understanding could be deeper.

As You Walk The Workplace:

Check:

perhaps we should have said “Ask…” rather than “Check” but asking and observing are ways to “check.” All of the below are things that the leader walking the workplace must verify by testing the knowledge of the people doing the work.

A. How should the work be done? Content, Sequence, Timing, Outcome

This is another nod to the research of Steven Spear. The key point here is that before you can ask any of the following questions, you have to have a crisp and precise of what “good” looks like. In this paradigm, all processes are target conditions. And as the work is being done, we are actively searching for obstacles so we can work to make the work smoother and more consistent.

In other words, “What should be happening?” and “How do you know?”

Do the people doing the work understand the standard process as it should be done?

A few months ago I went into some depth on this here: Troubleshooting by Defining Standards. That probably isn’t the best title in retrospect, but there are too many links out there that I don’t want to break by changing it.

B. How do you know it is being done correctly?

Today I ask this question differently. I ask some version of “What is actually happening?” followed by “How can you tell?” We want to know if the people doing the work have a way to compare what they are actually doing against the standard.

C. How do you know the outcome is free of defects?

So, question B asks about consistency of the process, and question C asks about the outcome. Does the team member have a way to positively verify that the outcome is defect-free?

D. What do you do if you have a problem?

Again, we are checking if there is a defined process for escalating a problem. And we define “problem” as any deviation from the standard, or any ambiguity in what should be (or is) happening. We want someone to know, and act, on this, and the only way that is going to happen is to escalate the problem.

We want this process to be as rigorous and structured as the value-adding work.

And we want as much care put into designing production process as was put into designing the product itself. All too often great care and a lot of engineering time goes into product design, and only a casual pass is made at designing and testing the process.

Even better if these are done simultaneously where one informs the other.

For Abnormal Conditions:

ACT:

These are actions that the leader must take if she finds something that isn’t “as it should be” in the course of the CHECK questions above. Key Point: These are leadership actions. That doesn’t mean that the leaders personally carry them out, but the leaders are personally responsible for ensuring that these things are done – and checking again.

That is the only way I know of to prevent the process from continuing to erode.

A. Immediately follow up to restore the standard.

If it isn’t possible to get the intended standard into back place, then get a temporary countermeasure into place that ensures safety and quality.

B. Determine the cause of erosion.

We are talking about process erosion here, with the assumption that something knocked the process off its designed standard. Some obstacle has been discovered, we have to better understand what it is – at least enough to get it documented.

C. Develop and apply countermeasure.

Here we may have to run experiments against this newly discovered obstacle and figure out how to make the process more robust.

That is the end of the little card. But I want to point out that we didn’t just hand these out. You got one of these cards after time paired with a coach on the shop floor practicing answering and asking these questions. Only after you demonstrated the skill did you get the card – just as a reminder, not as a detailed reference. This exercise was inspired by a few of us who had experiences “in the chalk circle” especially with Japanese senseis who had been direct reports to Taiichi Ohno.

We piloted and developed this process on a very patient and willing senior executive – but that is another story for another day. (Thank you once again, Charlie. I learned more from you than you will probably ever realize.)

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LEI Book: Getting Home

“Are you ahead or behind?” seems an innocent enough question.

But when asked by a Toyota advisor, the simple process of becoming able to answer it launched Liz McCartney and Jack Rosenburg on a journey of finding consistency in things that were “never the same” and stability in things that “always changed.”

Getting Home is, first and foremost, a story. And, with the “business novel” being an almost worn-out genre, seeing a non-fiction story was refreshing. So when Chet Marchwinski from the LEI offered a review copy to me, I accepted.

For the story background, I’ll leave it to you to read the blurb on Amazon.* Better yet – read the book – and it is worth reading. I’ll say that right up front.

Yet with stories like this it is all too easy to dismiss them because they have different circumstances from “my” specific case and say “Yeah, it worked there, but won’t work here.”

I would contend, however, that in this case “it worked” in situations that are far more difficult than anything we are likely to encounter in most organizations.

What I want to do here is help pull their specific achievements into more general application – what lessons are here that anyone can take away and apply directly.

What They Achieved

I can’t think of a lot (any?) business circumstances that would have more built-in variability and sources of chaos than the process of rebuilding communities after a disaster such as a hurricane or flood.

Every client has different circumstances. The make, mix and skill levels of the volunteer workforce changes continuously. Every community has different bureaucratic processes – not to mention the various U.S. government agencies which can be, well, unpredictable in how and when they respond.

Yet they have to mobilize quickly, and build houses. This means securing funding, getting permits, mobilizing unskilled and skilled labor, and orchestrating everything to meet the specific needs of specific clients on a massive scale… fast.

How They Achieved It

When they first connected with their Toyota advisor, the simple question, “Are you ahead or behind?” prompted the response that drives all improvement, all scientific advancement, all innovation:

“We don’t actually know.”

Actually they did, kind of, but it was in very general, high-level terms.

And that is what I encounter everywhere. People have a sense of ahead or behind (usually behind), but they don’t have a firm grasp on the cause and effect relationship – what specific event triggered the first delay?

This little book drives home the cascading effect of ever deepening understanding that emerges from that vital shift from accepting things as they are to a mindset of incessant curiosity.

Being able to answer “Are you ahead or behind?” means you have to have a point of reference – what is supposed to happen, in what order, with what timing, with what result. If you don’t know those things, you can only get a general sense of “on track” or not.

They had to develop standards for training – what to train, how to train – volunteers! – , which meant challenging assumptions about what could, and could not, be “standardized.” (A lot more than you think.)

A standard, in turn, provides a point of reference – are we following it, or are we being pushed off it. That point of reference comes back to being able to know “Are we ahead or behind?”

 

It Isn’t About the Specific Tools

Yet it is. While it isn’t that important about whether this-or-that specific tool or approach is put into place, it is critical to understand what the tools you use are there to achieve.

As you read the book, look for some common underlying themes:

Information as a Social Lever

The project started revolving around the ahead/behind board.

In the “lean” world, we talk about “visual controls” a lot, and are generally fans of status boards on the wall. We see the same thing in agile project management (when it is done well).

These information radiators work to create conversations between people. If they aren’t creating those conversations, then they aren’t working. In Getting Home it was those conversations that resulted in challenging their assumptions.

Beyond Rote Implementation

Each tool surfaced more detail, which in turn, challenged the next level. This goes far beyond a checklist of tools to implement. Each technical change you make – each tool you try to put into place – is going to surface something that invites you to be curious.

It is the “Huh… what is happening here?” – the curiosity response – that actually makes continuous improvement happen. It isn’t the tools, it is the process of responding to what they reveal that is important.

Summary

Like the tools it describes, Getting Home is an invitation, and that is all, to think a little deeper than the surface telling of the story.

My challenge to you: If you choose to read this book (and I hope you do), go deeper. Parse it. Ask “What did they learn?” ask “What did this tool or question reveal to them, about them?” And then ask “What signals did they see that am I missing in my own organization?”

 

 

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*This is an affiliate link that give me a very small kickback if you happen to purchase the book – no cost to you.

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That Broken Bolt is Speaking to You

The factory is running complex automated equipment. At the morning meeting today we heard “machine x was down for broken bolts.” Actually “again.”

Background – the bolts in question resist pressure in molding equipment. The details of how the equipment works aren’t relevant here. This isn’t the first time I have heard of “broken bolts” being the source of downtime.

After the meeting, I saw the production manager on the shop floor. “So, tell me about the broken bolts.” We know each other, he is happy to.

We went to the machine in question. “How do bolts break?” (These days I ask “how?” rather than “why?” because I am interested in the mechanism of failure rather than whatever mistake is being made.

I am asking that question for a simple reason: Grade 8 bolts don’t “just break” in equipment that is properly engineered and assembled as designed. Something, somewhere, is stressing things beyond their limits.

Normalized Deviance

By accepting that “bolts break” and “shafts get stripped” and “hoses fail” we move into the realm of “normalized deviance” where we accept as OK something that actually is a sign of a serious problem.

image

This is no different than accepting that “o-rings burn through sometimes but it hasn’t caused a problem so it must be OK.”

How do Bolts Break?

A few possibilities came up.

  • The bolts might be just a bit too long allowing movement.
  • The might be loose.

“Why is a ‘too long’ bolt even needed in the plant?” – that is still an open question.

“What is the torque spec?”

“… I don’t know.”

Now we are getting somewhere.

Once we hit the threshold of knowledge, we know the next step.

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Target Condition vs. Target

This search question landed someone on my site yesterday, and I thought it would be a good one to try to answer specifically:

why is lean manufacturing preferred to implement target condition as compared to target?

In other words, what is the difference between a “target” and a “target condition?”

Where this gets sticky is that there isn’t any canonical definition of either term. There are people who use “target” to describe what I mean when I say “target condition.” So I think it is probably best to focus on that term: “Target Condition.”

“Target Condition” = “Target Process”

A team I am working with is bringing up a new (to them) product line. Their short-term target is to complete 8 units / day. But just saying that doesn’t describe the way they want the process itself to operate.

The Target Condition for the line is unit-by-unit flow in critical parts; with order-by-order flow in others (where we can’t overcome batching at the moment). To that end, we have created some guidelines for the layout and movement of work; limits on work-in-progress inventory, etc.

Block diagram of flow line

We know that this can’t be achieved right away, but aren’t sure what problems will surface as we try. Thus, the effort is focused on trying to operate to the target process in order to surface those obstacles so they can be systematically addressed.

So – to answer the question “Why [does] lean manufacturing prefer to implement a target condition as compared to a target?” – Unless we know how we want the process to operate, we have no point of comparison for how it is actually operating.

Without the ability to compare “What should be?” with “What actually is?” we cannot identify the gaps we need to close, the problems we need to work on to get there.

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Problem: What Does Maintenance Cost?

Another interesting “homework problem” showed up in the searches today:

an assembly line turns out parts at the rate of 250 per hour. on the average, the line must be shut down for maintenance for 20 hours during a month. how much production is lost each month?

Answer: None.

Wait a minute!! What about the 20 hours * 250 units / hour = 5000 units? Isn’t that lost production? Maybe. What problem are you trying to solve?

I’m making a couple of assumptions here. First is around the word “maintenance” vs. the word “repair.” If the line requires 20 hours of maintenance to run reliably and avoid repairs, then this time must be planned into the expected monthly production. Thus, no planned production is lost.

If no production above the planned level is required, then I can’t say any is lost. This is why one-dimensional questions like this are so dangerous. Whenever we are confronted with questions like this, we must always ask another:

Compared to what?

What should be happening? What is normal? What is needed? Simply saying that the line (when it is running) can produce 250 units per hour is data, but it gives us nothing to act on.

Here is the rule I have been pushing lately:

Whenever you measure something, there are always two values.

  1. What you measured.
  2. What is required or expected if the process or thing you are measuring is problem free or otherwise doing what it should or what you expect.

This is equally true for an observation.

  1. What you saw.
  2. What you should have seen if things were as expected or problem-free.

Then you can start the process of meaningful inquiry.

If my line produces 250 units / hour when running problem-free, and requires 20 hours of maintenance a month to be able to do that, we have a single piece of information: How much production I should expect during the month.

Is that enough? Then no problem, turn your attention to something more pressing.

Is that not enough? OK – now we have to get serious.

A lot of management teams confronted with this problem are going to reflex to just allocating fewer hours to maintenance in order to get more hours for production.

Don’t do it.

Just cutting maintenance time is going to make things worse. Maybe not this month or even next, but sooner or later you will be losing a lot more than 5000 units of production / month. What will make this frustrating is you won’t lose them all at once. You will experience slowdowns, short stoppages, jams, and all of these things will seem like a normal day – only you won’t be making 250 units per hour anymore.

This is where a lot of management team struggle. They only look at “maintenance hours” and issue a directive to cut those hours.

But “maintenance hours” is a metric that you cannot action directly. This is a classic example of what I wrote about a couple of years ago in “Performance is the Shadow of Process.”

Worse, this is a step away from what you are trying to accomplish… which is what?

Key Question: What Problem Are You Actually Trying to Solve?

“I need to reduce the time we spend on maintenance.” is not a problem. It might be a desire, or a possible solution, but if you start here, you are already restricting your thinking.

If you did reduce the time you spent on maintenance, what would you be able to do that you can’t do today? Why is this important to work on?

(Sometimes I get “We wouldn’t spend so much time on maintenance.” I always have to laugh when I hear something like this. Aren’t circular arguments fun? “OK, why is it important to spend less time on maintenance?”)

After some discussion, we might arrive at something like a need to produce another 1000 units / month to meet increased sales demand.

That becomes our challenge. Then the fact that we spend 20 hours / month doing maintenance is part of (and only part of) the current condition. But I can ask other question now such as:

How fast must we produce (units / hour) to get another 1000 units / month? You would be surprised how often the math tells us a number that is slower than “250 units per hour.” Huh. So maybe that’s the rate when things are running smoothly… where is the time going?

The point is that it is critically important to understand why you are asking how much time is being “lost” to maintenance to avoid jumping to a solution.

 

Poster - What Problem are you Actually Trying to Solve?

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Overproduction vs. Fast Improvement Cycles

A couple of weeks ago ago I posted the question “Are you overproducing improvements?” and compared a typical improvement “blitz” with a large monument machine that produces in large batches.

I’d like to dive a little deeper into some of the paradoxes and implications of 1:1 flow of anything, improvements included.

What is “overproduction” – really?

In the classic “7 wastes” context, overproduction is making something faster than your customer needs it. In practical terms, this means that the cycle time of the producing process is faster than the cycle time of the consuming process, and the producing process keeps making output after a queue has built up above a predetermined “stop point.”

If the cycle times are matched, then as an item is completed by the upstream process, it is consumed by the downstream process.

If the upstream process is cycling faster, then there must be an accumulation of WIP in the middle, and that accumulation must be dealt with. Further, those accumulated items are not yet verified as fit-for-use by the downstream process that uses them.

The way this applies to my “Big Improvement Machine” metaphor is that we are generating “improvement ideas” faster than we can test and incorporate them into the process.

“Small Changes” Doesn’t Mean “Slow Changes”

No matter how good your solution or idea, it is just an academic exercise until it is anchored as the an organizational norm. The rate limit on improvement is established by how quickly people can absorb changes to their daily, habitual routine.

Implementing and testing small changes one-by-one is generally faster than trying to make One Big Change all at once. When we do One Big Change, it is usually actually a lot of small changes.

I hear “we don’t have time to experiment,” but when I ask what really happens if a big change is made, what I hear almost every time is they had to spend considerable time getting things working. Why? Because no matter how well the Big Change was thought through, once you are actually trying it, the REAL problems will come up.

Key Point #1: Don’t waste time trying to develop paper solutions to every problem you can imagine. Instead, “go real” with enough of the new process to start revealing the real issues as quickly as possible.

In other words, the sooner you start actively learning vs. trying to design perfection, the quicker you’ll get something working.

Slow is Smooth, Smooth is Fast

Your other objective here is to develop the skill within the organization to test and anchor changes quickly, as a matter of routine. This will take time.

When we see a high-performance organization making rapid big changes, what we are typically seeing is making small changes even more rapidly. They have learned, through practice over time, how to do this. It isn’t reasonable to expect any organization to immediately know how to do this.

Key Point #2: If managers, or professional change agents (internal or external consultants, for example) are telling people exactly what to do, this learning is not taking place.

It is critical for the organization to develop this learning skill, and they are only going to do it if they can practice. Learning something new always involves doing it slowly, and poorly at first. If your internal or external consultants are serving you, their primary focus is on developing this basic competence. Their secondary focus is on getting the changes into place. This is the only approach that actually strengthens the organization’s capability.

The same is true for an operational manager who “gets” lean, but tries to just direct people to implement the perfect flow. It will work pretty well for a while. But think about how you (the operational manager) learned this stuff: Likely you learned it by making mistakes and figuring things out. If you don’t give your people a chance learn for themselves, you limit the organization in two ways:

  1. They will never be any better than you.
  2. They will wait to do what they are told, because that is what you are teaching them to do.

Think about what you want your people to be capable of doing without your help, and make sure you are giving them direction that requires them to practice doing those things. It will likely be different than telling them what they layout should look like.

Improve your Cycle Time for Change

Coming back to the original metaphor, if you want fast changes to last, you have to work speeding up the organization’s cycle time for testing improvement ideas. Part of this is going to involve making that activity an inherent and deliberate part of the daily work, not a special exception to daily work.

Part of that is going to be paying attention to how people are working on testing their ideas. The Improvement Kata and Coaching Kata are one way to learn how to deliberately structure this work so that learning takes place. Like any exponential curve, progress seems painfully slow at first. Don’t let that fool you. Be patient, do this right, and the organization will slingshot itself past where you would be with a liner approach.

Small changes, applied smoothly and continuously become big changes very quickly.