Problem: You have your printer listed twice for some reason, only one of them works, and you can never remember which one Solution: Delete both and re-add the printer Results: You have three copies of your printer listed
It sometimes surprises me to learn that there are people who don't know that one of the first really big datasets used to train and evaluate computer language and social models was (and still is) a bunch of internal emails from Enron. Yes, that Enron. Collected as part of the investigation into its collapse.