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Originally posted by Essan
reply to post by Harte
How do you know that the dinosaurs don't only come into your room when you're out?
The shortest time period of ancient Hindus made up one-three-hundred-millionth of a second.
Originally posted by Imtor
reply to post by mblahnikluver
I dont think this scenario is possible, if we had nuclears, the knowledge would live in the past centuries. There was a movie about post apocalypse where the guys were wearing animal skin and spears.. this is not realistic. Whatever knowledge we have, we use it, we woulda lways find a way to reinvent it.
That's why humans having such weapons is unlikely. Aliens using them and clearing the planet from dinosaurs to me is as equally possible as an asteroid hitting the Earth. Just because impacts happen, does not mean anyone can prove 100% it happened so with dinosaurs.