Lean Blog Audio: Practical Lean Thinking, Psychological Safety, and Continuous Improvement17 Des 2025

Five NUMMI Tour Lessons That Still Define Lean Thinking

In this episode, Mark reflects on a visit he made twenty years ago to the NUMMI plant in Fremont, California — the Toyota-GM joint venture that became legendary in Lean circles. What stayed with him wasn’t flashy tools or so-called Lean perfection, but a series of small, human moments that revealed how Lean actually works as a management system.

Through six short stories — a broken escalator, aluminum foil, an explanatory safety sign, a pull-based gift shop, imperfect 5S, and visible audit boards — Mark explores the deeper principles behind Lean thinking: asking “why” before spending money, respecting people enough to explain decisions, encouraging small frontline ideas, and reinforcing standards through daily leadership behavior. Long before the term was popular, NUMMI demonstrated psychological safety in action.

The episode also contrasts NUMMI’s management system with what came after, when the same building became Tesla’s first factory — underscoring a central lesson: buildings and technology don’t create quality. Culture does. These NUMMI lessons remain just as relevant today for leaders trying to build systems that support learning, accountability, and continuous improvement.

Explore the original NUMMI Tour Tales:

Denne episoden er hentet fra en åpen RSS-feed og er ikke publisert av Podme. Den kan derfor inneholde annonser.

Episoder(470)

Calling Someone a "Process Coach" Doesn't Make Them One

A title change is not a culture change. In this episode, Mark Graban draws on his early experience at GM in the mid-1990s — where "foreman" became "team coordinator" overnight without anything else ch...

19 Mai 13min

Still Learning: A Live Event with Elisabeth Swan on May 7

Blog post with linksThree years ago, The Mistakes That Make Us came out. Around the same time, Elisabeth Swan published Picture Yourself a Leader. Both books' third birthdays felt like a decent reason...

4 Mai 2min

Watch the Lean Hospitals Coach in Action -- Live, Unscripted, With Your Questions

Most AI tools answer your question with a 500-word essay full of numbered steps. You nod, close the tab, and carry on doing what you were already doing. The Lean Hospitals Coach is built around the op...

8 Mar 8min

What a Brandi Carlile Concert Teaches About Practicing Continuous Improvement

Read the blog postTL;DR: A sound check, live song requests, and a naming regret — what watching Brandi Carlile perform taught me about specific problem-solving, vulnerability, and continuous improveme...

27 Feb 15min

What Deming and Fujio Cho Agreed On: Stop Demotivating People

The blog postTL;DR: Deming and Toyota's Fujio Cho asked the same uncomfortable question: why do management systems destroy motivation in people who started out wanting to do good work? The answer poin...

26 Feb 15min

Create Your Own Lean System — But Don’t Lose Sight of These Three Things

Read the blog postTL;DR: In a 1993 speech, Toyota leader Fujio Cho said organizations can create their own Lean systems, but success depends on three principles: leaders going to the gemba, asking “wh...

24 Feb 15min

Building an AI Chat Assistant From My Lean Hospitals Book

The blog postWhat if a book could become an interactive coach instead of a static reference?In this episode, Mark Graban shares a behind-the-scenes look at his experiment turning the award-winning boo...

19 Feb 15min

Inside the 1987 NUMMI Management Practices Executive Summary: Why Leadership Mattered More Than Lean Tools

The blog postIn this episode, I explore the 1987 NUMMI Management Practices Executive Summary — a confidential General Motors report that documented why the joint venture between GM and Toyota was suc...

13 Feb 13min