Distrust Any Result You Are Pleased About
Bad results get investigated because they demand it. Good ones supply their own explanation, which is exactly why they need scrutiny more.
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Never Delete a Rating, Only Grade It
Once a rating exists it stays and gets graded however it turns out. The rule sounds like theatre until you see what deletion does.
Read articleWrite the Threshold Down Before You See the Data
The single most useful rule we have, and the one that took the longest to accept, because following it means being wrong on the record more often.
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