Dr GMO is here to listen to your woes...
One of the worst I experienced was when someone added the wrong ingredient and, rather than flag the issue resulting in a small amount of waste, he dug the ingredient out of the hopper and kept it quiet.
Until people started saying it didn't taste right...
A fine example where the operator was working in an environment where speaking up probably wasn't the norm!
What experiences have you had and what did the team learn from it all?