"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

"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, beginning with a working simple system." https://en.wikiquote.org/wiki/John_Gall https://en.wikiquote.org/wiki/John_Gall