hey guys... everything can be true, BUT, IF the DOOMSDAYS SHALL COME, it will be THE DAY, NOBODY knows it... so, 21 december is just a symbol.... ppl born and ppl die... nothing new in this world will happen
however, as universe is so big, i think we JUST are totaly disinformed on all these things.
BUT as we are organic beings, food for viruses and bacteries, we r just too precious te be let alone in the hand of the distruction, we will survive :P