I'd love to make a flip comment about how I know that, I was just being sarcastic, but the truth is I always forget whether it was monkeys or apes. It's a mental block for me, like spelling "separate" - my mind just refuses to hold the information.
very simple. the 12th planet came close in it's orbit to earth. "people" of the 12th planet are super smart.. or so they think. and they cross bred an earth primate with their own "people". then they dropped us off here on earth to see what would happen in the time it takes their planet to make another orbit. :saucer: duh! where do you think dolphins come from? same thing! but with sea mammals.
so based upon your analysis those aliens must really like to fuck because people, primates and dolphins all fuck for pleasure... unless they came here because they were sexless and had a case of the 40million year old virgin and wanted to finally get laid. I knew we were special somehow. beats the geocentric model... we can call it the procreocentric world view.
I really, really wish that I believed in creationism. I do. Evolution clearly happened, though. That's fascinating, too. Extrememly. But it doesn't offer a supreme being looking out for me. Bummer. So, I gotta say evolution. Or, I could close my eyes and plug my ears and yell, "Lalalalalala!":rolleyes5