It finally occoured to me that mabie the reason we havent contacted any other civilizations is because WE'RE are the most advanced civilization out there, and that we're the ones who are millions of years ahead of everyone.
or maybe our planet is nothing more but some sort of aquarium that belongs to some giant fat kid alien that we prefer to name as god and that he caused the big bang because he strapped giant fireworks to the previous inhabitant for fun and that the dinosaurs exctinceded because he tossed a little rock in his human aquarium and then used a giant loop to burn the dinosaurs like little ants.
oh yeah and the ice age was actually caused because he forgot to put us back inside during winter and global warming is caused because we are placed next to the window in the sun right now.
sounds stupid? it's nothing more but a theory.