Toyota. Know when to break the rule.
Toyota invented the most copied idea in modern business, then stopped doing it. The people who invented the rules are the first to know when to break them.
THE GIST ON TOYOTA: "Just in Case"
What did Toyota invent?
Toyota invented the most copied idea in modern business and then stopped doing it. After the war, it came up with Just-in-Time: you only hold as much stock as you need. Every part turns up exactly when it's needed and nothing sits in a warehouse.
It made Toyota the most efficient car maker on earth, and the whole world copied it. For decades, Lean and Just-in-Time were gospel, taught in every business school going. Ask me how I know.
What changed in 2011?
An earthquake hit Japan and wrecked Toyota's supply chain. Production fell by 80% in a month. It taught them a valuable lesson: for the parts you can't replace quickly, like computer chips, you keep months in stock.
They broke the golden rule, and their inventory nearly doubled. So when the chip shortage hit in 2021 and every other car maker ground to a halt, Toyota just kept on rolling.
Where are we now?
Here we are in 2026, with war, tariffs and supply shocks everywhere, and the whole world is finally tearing up Just-in-Time to stockpile Just-in-Case. Everyone's catching up with Toyota, just 15 years too late.
What did everyone miss?
Everyone copied them because it was efficient and cheap. Why wouldn't you? But nobody copied the why. If you follow a rule blindly for long enough, without understanding it, it curdles into a religion. For Toyota it was always just a tool, so they knew when to put it down. Everyone else kept praying to it right up until the point the church burnt down. Are you breaking your own rules too?
Just in case or just in time: which would you run on?
Your take. One tap, then see how everyone else voted.
Quick answers
What is Just-in-Time?
Toyota's post-war idea of only holding as much stock as you need, with every part turning up exactly when it's needed and nothing sitting in a warehouse.
Why did Toyota break its own rule?
An earthquake in 2011 wrecked its supply chain and cut production by 80% in a month. It now keeps months of stock of parts it can't replace quickly, like computer chips.
How did that pay off?
When the chip shortage hit in 2021 and other car makers ground to a halt, Toyota kept on rolling.
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