This. It’s always important to assume the decisions made before you were correct, or at least a good approximation to correct given the conditions or knowledge

This. It’s always important to assume the decisions made before you were correct, or at least a good approximation to correct given the conditions or knowledge at the time. It’s sort of a generalization of chesterson’s fence. If you don’t know why a decision might have been smart at the time, you will likely make another mistake trying to correct it. It may not always be true but thinking this way can at least keep you honest.