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Lean Versus Just in Time
The phrase lean is sometimes used synonymously with just in time. But it's misleading because lean sounds like you deliberately stripped away the inventory, says Jean-Claude Van Damme. The reason a watch has lubrication is because of people's inability to create perfect gears. A lot of these systems that are really good just in time is they require less lubrication in the form of in in inventory. Tooda is actually weathering the supply chorage better than other auto manufactures according to an article i read this morning. That blew my mind.
In this episode of The Idealcast, Gene Kim speaks with Dr. Steven Spear on his critiques of several articles from the NY Times and the Wall Street Journal, and their characterization of the impact of Just-in-Time (JIT) supply chains and the widespread shortages caused by the COVID-19 global pandemic. While the unprecedented health crisis created a widespread shortage of almost everything—from toilet paper to semiconductor chips to raw materials vital for medical materials—with results that impacted everyday life on a global scale, Dr. Spear makes the claim that JIT lessened the severity of shortages, as opposed to causing them.
The discussion is informed by Spear’s work on accelerating learning dynamics within organizations and the Toyota Production System, and from his time observing and working directly with a tier-one Toyota supplier. Kim and Spear dive deep into supply chain dynamics and why they are important to society. The discussion delves into how JIT manufacturing not only revolutionized manufacturing but also the entire manufacturing supply chain and how it increased (not decreased) resilience, productivity, efficiency, and prosperity.
They also explore the structure and dynamics of these JIT supply chains, as well as the similarities of the famous Netflix Chaos Monkey, famous for helping Netflix build resilient services that can survive even widespread cloud outages and the larger, emerging field of Chaos Engineers (arguably, a subset of resilience engineering).
Additionally, they explore Toyota’s manufacturing and how its history helped it become one of the least impacted by the semiconductor shortages. They follow that with an examination of the JIT’s antithesis and how it’s similar to the dynamics found in the Soviet’s centrally planned economy, particularly with its IT structure and dynamic results. Kim and Spear tie these things into the three basic tools of finance: net present value, option theory, and portfolio diversification.
ABOUT THE GUESTS
Dr. Steve Spear (DBA MS MS) is principal for HVE LLC, the award-winning author of The High-Velocity Edge, and patent holder for the See to Solve Real Time Alert System. A Senior Lecturer at MIT’s Sloan School and a Senior Fellow at the Institute, Dr. Spear’s work focuses on accelerating learning dynamics within organizations so that they know better and faster what to do and how to do it. This has been informed and tested in practice in multiple industries including heavy industry, high tech design, biopharm R&D, healthcare delivery and other social services, US Army rapid equipping, and US Navy readiness.
YOU’LL LEARN ABOUT
RESOURCES
TIMESTAMPS
[00:37] Intro
[09:07] What Dr. Spear found objectionable in the NYT article
[13:41] How JIT increased resilience of the supply chain
[17:18] What are supply chains and what makes it so complex
[24:11] The economic impact of inventory and recapture
[28:17] The impact created by mass adoption of JIT practices
[42:00] JIT vs lean manufacturing
[44:46] How Toyota could handle the semiconductor shortage
[51:19] An example of the resilience of Toyota’s supply chain and manufacturing capabilities
[57:03] How to motivate everyone to mobilize
[1:02:12] What happened with Netflix’s chaos monkey and EYE-shin mattress factory plant
[1:08:13] Twitter feedback
[1:09:37] The link between experimentation at the EYE-shin plant and low cost of change
[1:17:30] Four characters of simplification, standardization, stabilization and synchronization
[1:20:46] The 2002 West Coast Port Lockout
[1:33:43] What triggered this conversation
[1:38:57] The opposite of JIT
[1:43:11] Three finance theories
[1:50:45] How the Soviet’s centrally planned economy compares with the four characteristics
[1:58:23] A misunderstanding of JIT
[2:05:15] Outro
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