You have to manage a system. The system doesn't manage itself.
Scrap doesn't come for free, we pay someone to make it.
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.
You can not hear what you do not understand.
Divide responsibility and nobody is responsible.
Nobody should try to use data unless he has collected data.