Serious thread. So, I like to think about the world, and life, and humanity as a whole. I have a really open mind, and think about this almost non stop, 24/7. So, I was thinking, how did humans end up on earth? What's your theory? What do YOU belive happend, how do YOU think we came to be here? People say God, others say Evolution, I, on the other hand, have a more out of the box theory that i'd like to share with all of you. This is a serious concept, so don't think im just being silly, or making fun of anyone. They say the universe is too big to hold only one planet with life on it. If this were true, then we would truly be a miracle to the universe itself. I use this to my theories a lot, like aliens(not green people...)etc... Anyway, I was thinking, about the whole, dinosaurs going extinct, and UFO sightings from the early ages of the earth, etc..what if these were all real? Now, just hang with me for a second guys..what if, humans existed long before earth was formed in the cosmos? What if, there was another planet, like earth, somewhere far out there, billions of years ago(the universe, I expect, has been around for a very long time...it shouldn't have took this long for humans to show up)that had human life on it? Humans like you and I? What if, they got so advanced in technology, and their planet got so destroyed by humanity itself(like whats happening to earth)that they actually could make flying technology that was so fast, that it could travel through the universe fast enough to find another planet that could harvest life? What if, they found earth, and landed here, what if, instead of meteors killing the dinosaurs, it was our ships landing here from another planet? But then again, that brings up the question, "well if we came from another planet, how were we created on that planet, and so on? Where was the first planet to harvest humans?" Well, how do we know, if not zillions of years ago, there was another species that actually MADE us with experiments? Thus, the humans were born? Basically, our old planet was being destroyed and getting way too overpopulated that we came up with the flying saucer(or whatever they called it themselves)and traveled through the galaxy and found earth? Landed here, killed the dinosaurs, and had to start from scratch since technology didn't exist on earth back then. How do you know, if in decades from now, we do the same exact thing? Earth gets so overpopulated and destroyed by ourselves, that we create something that can find other planets to be habital on, and travel there, and start a new civilization?(circle of life anybody?)and then religion and politics will start on that planet, along with technology, and slowly, but surely, we humans destroy every habital planet there is in the universe? We repeat our same mistakes from the last planet we were on, how do we know if that is not our destiny as a human being? We don't. Which is why this is just a theory. Anyone else have a theory on this or anything related?