A bad system will beat a good person every time.
Management by results is confusing special causes with common causes.
When a system is stable, telling the worker about mistakes is only tampering.
The moral is that it is necssary to innovate, to predict the needs of the customers, and give him more. He that innovates and is lucky will take the market.
We must understand variation.
Inspection with the aim of finding the bad ones and throwing them out is too late, ineffective, and costly. Quality comes not from inspection but from improvement of the process.