-shrugs-
When you think about it, if the world had ended all the times people have predicted it to, then .... wow.
Edit
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Did anyone see the new episode of Simpsons? It had a same basic theory: The world will end. Something will a Raptor or something like that. Homer thought the world will end (twice) and both times he was wrong. Of course, I know it's just a cartoon, but it's an interesting thought.