[DanBC]

> how about having a specific written signoff procedure in place, where all supplies must be checked before purchase by a trained expert who knows the difference between organic and inorganic / clay vs wheat, signed off in writing against a checklist developed by experts, then checked again by a separate trained expert when delivered with another signoff, then checked again by a third export when actually used.

Multiple inspection is a known failure point. A thinks any errors they make will be caught by B and C. B thinks A knows what s/he's doing, and thinks any errors that slip by B will be caught by C. C thinks A and B know what they're doing and so no errors will have reached C.

The boss that recruited A, B, and C to their position pulled the most accurate workers from the shop floor - because you need the inspectors to be better than the shop floor.

Thus quality of product supplied to inspection is reduced; the inspectors are now very busy; and that leads them to shift product through (someone else will catch it; someone else has already caught the problems).

What you need is to give an accurate instruction, and to give people to halt if they're unclear what's meant.