It often seems to me that's all detective work is, wiping out your false starts and beginning again.""Yes, it is very true, that. And it is just what some people will not do. They conceive a certain theory, and everything has to fit into that theory. If one little fact will not fit it, they throw it aside. But it is always the facts that will not fit in that are significant.
Agatha Christie, Death on the Nile
detective, fact, mystery, theory