Phoenix's Universal Laws of Computing:
1) Your computer is stupid, but completely obedient. It will do exactly what you tell it to do, whether or not that's what you actually want or, indeed, what you thought you were doing.
2) Your computer is out to get you. It hates your guts and wants you dead. You cannot let down your guard even for a moment. Save early, save often, and back up
everything regularly.
3) Your computer can tell if you're afraid. It will do everything in its power to keep you that way. You have to show it who's boss, and that had better be you.