The 1% Rule Is Not a Metaphor
Kaizen, the Japanese word combining kai (change) and zen (good), was first applied systematically in post-war Japanese manufacturing. Toyota's production line didn't become the world standard through occasional overhauls, it got there through daily, incremental adjustments made by workers at every level of the factory floor. The principle that drove it: any process can be improved by 1% today. Not redesigned. Not overhauled. Improved by 1%.