The end of the world... again. How terribly inconvenient.

Who do you trust with the end of the world? The Mayan's (so far all completed) predictions of 2012 or 'diabolical' Russian scientists? So in 2009 Russian scientists predicted the Aphophis asteroid has a >2% chance of impact in 2036, now Professor Leonid Sokolov predicts the chances are slim, but precautions must be taken. Precautions 26 years in advance for an asteroid that may not hit us? Even if it does, won’t we be disintegrated in ash anyway? Does this mean anything if the 2012 prediction is correct and the world as we know it is already gone? Vagueness of the Mayans' definition of "the world as we know it" could also be questioned...