Tag Norval

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What Is Yokoten? Why Copy-and-Improve Beats Copying Exactly in Lean

TL;DR: Yokoten spreads learning horizontally so teams can go see, think, and build on ideas–not blindly copy them. Mark’s Note: Today’s post is from Al Norval, with the firm Lean Pathways, Inc. Yokoten Means Copy and Improve — Not Copy…

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Guest Post: Lean Value Streams

Mark’s note: Today is the first of what might be a regular series of guest posts from the team at Lean Pathways, Inc., including Pascal Dennis and Al Norval, the leaders of that group. by Al Norval at leansystems.org Lean…

Mark Graban on Eiji Toyoda on Mistakes: Give Your All, Then Write It DownJuly 6, 2026
Thanks for reading and commenting, Sid. I totally agree. When I teach about how best to react to mistakes (and…
Mark Graban on When Following “Best Practices” Is the Real Mistake: What Lean Practitioners Can Learn from Eric RiesJuly 6, 2026
Thanks for adding that history and those stories, Andy!
Andy Wagner on When Following “Best Practices” Is the Real Mistake: What Lean Practitioners Can Learn from Eric RiesJuly 5, 2026
What an outstanding book! I'm about 1/2 through, but it resonates with me in terms of my experience, business history…
Sid Joynson on Eiji Toyoda on Mistakes: Give Your All, Then Write It DownJuly 4, 2026
Our normal attitudes to see mistakes as learning opportunities. This changes completely when the mistake could create danger or damage…
Kevin Morgan on A Free Red Bead Game Simulator: Try Dr. Deming’s Experiment OnlineJune 27, 2026
I really appreciated how you used the hospital infection example to show that not every fluctuation demands a reaction. It's…

What Is Yokoten? Why Copy-and-Improve Beats Copying Exactly in Lean

Guest Post: Lean Value Streams

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