A paradox is like a staircase, in which each step leads inexorably to the destination. But you get to the top, and the destination is impossible; you’ve stepped off into empty air. So one of the steps must be folly. Because the conclusion must necessarily be false, because we cannot live in a world where logic does not work, one of our premises must necessarily be flawed. This is the source of our unease. A paradox means that somewhere along the path, we have gotten something deeply, terribly wrong.
