All of those clichés are facts; and talking about facts, nothing of what you or I think about their validity really matters.

All those clichés are screwed premature judgments based on half-knowledge, hear-say and prejudices of some sort, and as such, aren't really interesting.

Both of these sentences are as true as they are wrong (or should I say 'false'?). I could add to the first: what matters is the context in which those facts appear; and to the second: what's really interesting is the reason why people are contented with results of reasoning that poor. Which doesn't add much wrongness, and little truth. We get our experiences in a context we don't fully grasp. Okay, that's true for me, and I shouldn't say 'we' here. I stop then.

Everything you know is wrong (for you) anyways, if it isn't yourself... ;-)