Yet even mathematicians must be young to begin with. - Isaac Asimov

Using the mathematics of psychohistory, I can clearly show that the chances of total disappearance of Deviation are too microscopically small to have taken place through anything the Second Foundation can do.

I believe in evidence. I believe in observation, measurement, and reasoning, confirmed by independent observers. I'll believe anything, no matter how wild and ridiculous, if there is evidence for it. The wilder and more ridiculous something is, however, the firmer and more solid the evidence will have to be.

The unwritten motto of United States Robot and Mechanical Men Corp. was well-known: “No employee makes the same mistake twice. He is fired the first time.