Murphy's Seventh Law: Left to themselves, things tend to go from bad to worse.
Murphy's Eighth Law: If everything seems to be going well, you have obviously overlooked something.
Chisolm's Third Law, Corollary 1: If you explain so clearly that no one can misunderstand, somebody will.
Chisolm's Third Law, Corollary 2: If you do something which you are sure will meet with everyone's approval, somebody won't like it.
Crane's Law: There ain't no such thing as a free lunch.
Law of Communications: The result of improved and enlarged communications is a vastly increased area of misunderstanding.
Lord Falkland's Rule: When it is not necessary to make a decision, it is necessary not to make a decision.
Jones' Motto: Friends may come and go, but enemies accumulate.
Gumperson's Law: The probability of anything happening is inversely proportional to its desirability.
The usefulness of a meeting is inversely proportional to its attendance.