Faced with the choice between changing one's mind and proving that there is no need to do so, everybody slips on getting the proof.

Gerrold's Laws of Infernal Dynamics: 1. An object in motion will always be headed in the wrong direction. 2. An object at rest will always be in the wrong place. 3. The energy required to change either one of these states will always be more than you wish to expend, but never so much as to make the task totally impossible.

Gilb's Laws of Unreliability: 1) At the source of every error which is blamed on the computer you will find at least two human errors, including the error of blaming it on the computer. 2) Any system which depends on human reliability is unreliable. 3) Investment in reliability will increase until it exceeds the probable cost of errors, or until someone insists on getting some useful work done.

Ginsberg's Theorem: 1. You can't win. 2. You can't break even. 3. You can't even quit the game.

Glyme's Formula for Success: The secret to success is sincerity. Once you can fake that, you've got it made.

Goebel's Law of Useless Difficulty: Just because it's hard, doesn't mean it's worth the effort.