The customer is the most important part of the production line.
Plants don't close from poor workmanship, but from poor management.
It's not enough to do your best; you must know what to do & then do your best.
Does the customer invent new product or service? The customer generates nothing. No customer asked for electric lights. There was gas and gas mantles, which gave good light.
Rational behavior requires theory. Reactive behavior requires only reflex action.
You can not hear what you do not understand.