John Gall (1925-2014) was an American author, scholar, and pediatrician. Gall is known for his 1975 book ‘General Systemantics’ (republished two years later as ‘Systemantics: How Systems Work and Especially How They Fail’).
Gall’s Law is derived from Systemantics and states: ‘A complex system that works is invariably found to have evolved from a simple system that worked. A complex system designed from scratch never works and cannot be patched up to make it work. You have to start over with a working simple system.’
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September 18, 2025
John Gall
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