On paradox.......................

"This is what I understand by a paradox:  an apparently unacceptable conclusion derived by apparently acceptable reasoning from apparently acceptable premises.  Appearances have to deceive, since the acceptable cannot lead by acceptable steps to the unacceptable.  So, generally, we have a choice:  either the conclusion is not really unacceptable, or else the starting point, or the reasoning, has some non-obvious flaw."
-R. M. Sainsbury