People learn in different ways: reading, listening, pictures, watching.
Lack of knowledge - that is the problem.
Quality starts in the boardroom.
Anyone that enjoys his work is a pleasure to work with.
Absence of defects does not necessarily build business... Something more is required.
I should estimate that in my experience most troubles and most possibilities for improvement add up to the proportions something like this: 94% belongs to the system responsibility of management 6% special