Chisholm Effect: Basic laws of frustration, mishap, and delay
1st law of human interaction. If anything can go wrong, it will.
Corollary: If anything just cant go wrong, it will anyway.
2nd law. When things are going well, something will go wrong.
Corollary: When things just cant get any worse, they will.
Corollary 2: Anytime things appear to be going better, you have overlooked something.
3rd law. Purposes, as understood by the purposer, will be judged otherwise by others.
Corollary: If you explain so clearly that nobody can misunderstand, somebody will.
Corollary 2: If you do something which you are sure will meet with everybodys approval, somebody wont like it.
Corollary 3: Procedures devised to implement the purpose wont quite work.
Corollary 4: No matter how long or how many times you explain, no one is listening.