What if the biggest transformation in your life begins with a simple shift in perspective—not from believing life is happening to you, but realizing it is happening through you?

As Lean Horizons celebrates its 25th anniversary, founder Mark DeLuzio reflects on a quarter century of transformation work across six continents and dozens of industries. In this special episode, Mark examines the evolution—and in some cases, the dilution—of Lean thinking since the early days of the Toyota Production System's global expansion.

The future of Lean doesn't require new tools. It requires rediscovering the principles that made Lean powerful in the first place.

A CNC machine crashed on the shop floor. Nathan Corliss walked out as a young supervisor, angry and ready to blame the operator.

What happened next became one of the most important leadership lessons of his career.

Mark DeLuzio and Nathan talk about the moment that forced Nathan to confront his own behavior as a leader, and how the scars on his knuckles became a permanent reminder to pause, reflect, and lead differently. The conversation centers on hansei, the Lean practice of honest self-reflection, and why it matters when pressure is high, mistakes are visible, and people are watching how leaders respond.

You'll hear how one shop floor incident connects to emotional intelligence, respect for people, Kaizen report-outs, after-action reviews, standard work, compliance, and the danger of fear-based leadership.

For Lean leaders, CI managers, plant managers, and executives, this episode is a practical reminder that culture is shaped in the moments when things go wrong. The real test is not whether leaders know the right Lean language. It is whether they can own their mistakes, protect trust, and help people improve without shutting them down.

This is an unedited replay of a previous Lean 911 episode, originally published on January 13, 2023. We're bringing it back because the issue still causes Lean transformations to stall, drift, or flatline.

One of the most misunderstood parts of Lean, Standard Work, is often dismissed as unnecessary. So many companies contend that they are "doing" Lean, but leave Standard Work by the wayside. In this episode, you'll learn the answers to the most perplexing questions, notions, and beliefs regarding Standard Work, which is a key component of the Toyota Production System.

In this episode, we dive into the rise, dominance, and controversy surrounding Six Sigma — the corporate improvement system that promised near-perfect quality and became a management obsession across America. From Motorola's statistical revolution to Jack Welch's aggressive rollout at General Electric, Six Sigma evolved from a useful quality tool into what some critics call a full-blown corporate ideology.

Drawing from Mark DeLuzio's provocative essay "The Six Sigma Hysteria," we explore why many Lean practitioners believed Six Sigma created more bureaucracy than breakthrough innovation. We unpack the clash between Lean thinking and Six Sigma methodology, the explosion of belt certifications and consulting culture, and the argument that companies became obsessed with measuring defects while ignoring waste, flow, and human creativity.

Along the way, we examine real-world stories from Toyota, Danaher, and GE, and from factory floors where frontline employees solved problems that data alone could not. We also ask a bigger question: Are modern businesses repeating the same mistake today with AI, Agile, and productivity frameworks?

This episode is about more than Six Sigma. It's about the danger of turning tools into religion — and what happens when companies mistake methodology for culture.

Manufacturing Engineers pride themselves on precision, but what if the biggest waste is hiding in plain sight—inside the equipment itself?

In this episode, we challenge the status quo: excess feeds, slow speeds, and bloated cycle times that no one questions. Even worse, capital equipment is often purchased without alignment to Lean principles—locking in inefficiency for years. Learn how to look at Capital Equipment from a Lean lens…you will find out that equipment vendors are not your friend!

We’ll break down how this happens, why it persists, and what engineers should be doing instead. If your machines are running, but not improving, this episode is for you.

In this powerful episode of Lean 911, Mark DeLuzio sits down with former Air Force fighter pilot and Danaher sales leader Randy Fitzhugh to unpack the real science behind value selling and why most organizations get it wrong.

Drawing from his elite military background and executive experience, Randy reveals how sales is a disciplined, repeatable process. Together, they break down the four pillars of value selling: qualifying opportunities, monetizing value, pre-call planning, and time & territory management.

You'll hear eye-opening stories, from cockpit checklists to multimillion-dollar deals, that show why process, preparation, and deep customer understanding outperform charisma every time.

This episode dives into:

"You don't get what you expect. You get what you inspect."

Stop selling features. Start selling value, systematically.

Lean management teaches that standards are the foundation of safety, quality, and improvement. In aviation, those standards take the form of checklists, redundancies, procedures, and strict cockpit protocols designed to prevent human error.

In this episode, we examine the tragic aircraft accident that claimed the life of Greg Biffle and his family, and what it reveals about the danger of ignoring established standards. Reports indicate that critical procedures were bypassed—checklists weren't followed, and an unqualified individual was allowed into the cockpit. In aviation, such deviations can quickly turn routine operations into a catastrophe.

Lean organizations understand this principle deeply. Standard work exists not to restrict people, but to protect them. It ensures that critical steps are followed every time, preventing variation that can lead to defects, injuries, or worse.

This episode explores how aviation and Lean thinking share the same core truth:

Standards are written from experience, and ignoring them removes the safeguards that keep systems safe.

Whether in manufacturing, healthcare, aviation, or leadership, the lesson is clear—discipline in following standard work is what makes improvement possible and prevents tragedy.

Mark DeLuzio, the Father of Lean Accounting, tells his experience and observations on how traditional cost accounting will derail a Lean Transformation.

In many organizations, Lean transformations don't fail on the shop floor—they fail in the finance office. In this episode, "The CFO vs. Lean: The Fight That Gets Lean Leaders Fired," we examine a pattern that plays out in companies across industries: Lean improvements begin to transform operations, but traditional cost accounting systems tell leadership the exact opposite story.

As inventory falls, batch sizes shrink, and flow improves, the accounting system often reports declining "efficiency," higher unit costs, or unfavorable absorption variances. The numbers appear to signal failure—even when operational performance is clearly improving. When executives rely on these metrics, the Lean initiative becomes the scapegoat. Too often, the Lean leader is blamed for results that are actually caused by outdated financial measurement systems.

In this episode, we unpack the structural conflict between Lean principles and traditional cost accounting, explore why CFOs frequently defend these legacy systems, and explain how perfectly "correct" financial reports can lead companies to make deeply wrong decisions. Most importantly, we discuss how organizations can realign finance with Lean thinking so the transformation—and the people leading it—don't become casualties of the numbers.

In this episode, you'll be able to take away why many "logical" workplace measures and incentives can drive behavior that conflicts with Lean principles, and why comparing work decisions to everyday home-life decisions can make Lean concepts easier to understand and teach.

You will hear about various examples, including grocery shopping and volume discounts, which highlight purchase price variance and excess inventory. You will explore the concepts of push versus pull using the supermarket and kanban approach. You'll gain insights into utilization and overall equipment effectiveness (OEE) and understand how "banking" uptime can lead to overproduction and unmet demand.

Additionally, you will investigate changeover strategies using a multi-part thermoforming case, illustrated through a barbecue analogy comparing hot dogs and hamburgers. Finally, you will discover why oil leaks and poor visual management are perceived differently in the workplace compared to a car context, including the use of dashboards, warning lights, signs, and scoreboards.

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