The blog post

When Mark applied for a burglar alarm permit, he accidentally sent the form to the wrong Newport — Rhode Island instead of Kentucky. The voicemail he got back was kind, clear, and even funny: pointing out that an 845-mile police response probably wasn’t going to work.

In this story, Mark reflects on:

• Why small mistakes are easier to handle with humility and humor

• How Toyota’s “expected vs. actual” lens helps frame errors

• Why psychological safety and kindness matter more than blame

• How to turn a minor error into a “favorite mistake” — one you can laugh about and learn from

It’s a reminder that even harmless slip-ups can reinforce bigger lessons about improvement, culture, and how we respond to mistakes.

The blog post

In this episode, Mark explores how the Dunning-Kruger effect shows up in Lean—especially after a first belt course, workshop, or book. Early enthusiasm can turn into overconfidence, creating blind spots and stalling growth.

Drawing from his book Practicing Lean, Mark shares stories (his own and from contributors like Paul Akers and Jamie Flinchbaugh) about mistakes made early on, what they taught us, and why Lean should be treated as a practice, not a project.

Key themes:

• Why certifications are a starting point, not the finish line

• How psychological safety helps keep overconfidence in check

• Lessons learned from early Lean missteps

• Practical tips for avoiding common training pitfalls

All royalties from Practicing Lean benefit the Louise H. Batz Patient Safety Foundation, supporting safer care for patients and families.

The blog post

Sometimes an “improvement” makes things worse. The Germans even have a word for it: verschlimmbesserung.

In this episode, Mark Graban shares the story of how a well-intentioned fix to Europe’s vineyard fungus problem in the 19th century nearly wiped out the continent’s wine industry. The introduction of American grapevines solved one issue but unleashed a far bigger one: phylloxera, a microscopic pest that devastated vineyards, economies, and cultures across Europe — including Mallorca, where wine production lay dormant for nearly a century.

This historical case offers powerful lessons for today’s leaders:

• Why most of the time small, contained tests are best

• When risks are irreversible, testing may not be safe at all

• How to balance experimentation with rigorous risk assessment

• Why good intentions aren’t enough if you create tomorrow’s crisis while solving today’s problem

From vineyards to hospitals, factories, and offices, the challenge is the same: how do we solve problems without making things worse?