Shaw's Principle: Build a system that even a fool can use, and only a fool will want to use it.
Law of the Perversity of Nature: You cannot successfully determine beforehand which side of the bread to butter.
Law of Selective Gravity: An object will fall so as to do the most damage.
Sattinger's Law: It works better if you plug it in.
Lowery's Law: If it jams - force it. If it breaks, it needed replacing anyway.
Anthony's Law of Force: Don't force it - get a bigger hammer.
Cahn's Axiom: When all else fails, read the instructions.
Law of Research: Enough research will tend to support your theory.
Maier's Law: If the facts do not conform to the theory, they must be disposed of.
Peer's Law: The solution to the problem only changes the problem.