Hofstadter’s Law

Heh. Never heard of that Hofstadter guy before. However I immediately liked Hofstadter’s law:

It always takes longer than you expect, even when you take into account Hofstadter’s Law.

So much wisdom in only a few words! It should be printed on a T-Shirt, or a Poster, or be the first chapter of every “IT Project Management in 10 easy lessons” handbook.