Quote from: Bren;8598911) Is the mistake likely to effect continuity going forward? Then I try to find a way to reconcile things so that continuity is unaffected. The various suggestions people made to explain why the Sorcerer was more effective than the rules allowed are examples of reconciling things to preserve continuity--in this case rules continuity.

2) Was the mistake in favor of the PCs or against the PCs? If it is in the PCs favor, I'm likely to ignore it under the "No harm. No foul." rule of play.

3) If the mistake was against the PCs, did it result in a significant loss? If there was no significant loss to the PCs, then this too falls into the "No harm. No foul." rule and I'll let it go. If there was a significant loss to the PCs e.g. death, crippling injury, loss of a significant resource I'm much more likely to look to rewind stuff to undo the harm.

4) Is the mistake a rules issue? In this case, whether anything changes or not, I will point out the mistake so as to correct things in future and like Opaopajr I will ask for help in catching mistakes sooner in future.