Suppose you would rather buy a V8 Commodore than a Camry, and would prefer an '82 Jaguar with a small-block Chevy to the Commodore, but would on balance rather have the Camry than the Jag. This does not mean that (a) you are crazy, or (b) there's no way to actually make a choice.
Dan Rutter makes a point about intransitive relationships.

















