Should you correct production mistakes?

Tony Duell wrote: back Had we found any problem analogous to that in the PDP-1 restoration, where the machine operated correctly despite a manufacturing defect, I'm sure we would have had a debate on whether to fix it. I think my own opinion in that case would be that we should leave it alone, but tag the module (paper tag attached with a short loop of string) and document the issue in the system logbook. For something that isn't considered a museum artifact, I'd be more inclined to fix it. When we do fix PDP-1 modules, we mark the replaced components and log that as well. Since the component marking is intended to indicate that the component is not original, if we were just correcting an improperly installed component, we probably wouldn't mark it, but would still log it. Eric (not speaking for the PDP-1 Restoration Team or the Computer History Museum)