Hmmm,interesting.

Well a 100 years might be a little short I think,but a longer period we might have that kinda knowledge,to many people are still not looking further then this world.This might change with future generation,but I do agree if we dont blow ourselves back into the stone age,which is most likely is going to happen(several 100ds of years I think).According to my beliefs the planet might have been blown up several times before because of human foolishness and restored by the power of the cosmos(god) and started all over again..think like the matrix,it was reset several times but nobody knew,there was no evidence