Quote:
Originally Posted by dac
Think about how far we have progressed technology wise in the last 300 years. Now imagine a civilization 300,000 years older than us. Think about what kind of technology would exist. It is EXTREMELY possible that extra terrestrials have the ability to visit earth. As to whether or not they have, I'm not quite sure.
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That's going by the assumption that a planet has evolved INTELLIGENT life or not. It's already enough of a crapshoot for any sort of life to evolve anywhere! For the conditions to be right for intelligent life to come into existence on another planet, the chances aren't great. Then we have no idea how big the universe is either, so if intelligent life has evolved anywhere else in the universe, probablity would suggest it's VERY far away from us.