We are being ruined by the best efforts of people who are doing the wrong thing.
When a system is stable, telling the worker about mistakes is only tampering.
Everyone is a customer for somebody, or a supplier to somebody.
The greatest waste … is failure to use the abilities of people…to learn about their frustrations and about the contributions that they are eager to make.
If you do not know how to ask the right question, you discover nothing.
The only useful function of a statistician is to make predictions, and thus to provide a basis for action.