I got this from an MIT lecture note:
"If pigs fly, then you can understand the Chernoff bound," which is
If is false, and is true, the logical implication must be true.
In my case: Whether pigs can fly or not, I cannot understand the Chernoff bound, but
in Mr. Chernoff's case: Whether pigs can fly or not, he of course can understand his own bound.
There must be a better example than this. Does anyone have one?