Nicknamedbob and I have kicked about some story ideas that shade rather close to the premise that humans were created here, as well as came here.
The idea hasn’t been fleshed out real well, we haven’t put much into adding to the rough bones of it.
This one was the last ‘new’ fiction I’d read in 20+ years, had to track it down through the interlibrary loan system at that time, anyway, recommended to me by a FReeper in open thread. The author later wrote “Kicking the Sacred Cow” which favorably (and pretty accurately) reviews Velikovsky’s body of work, among other things, and bitch-slaps the global warming hoax. Alas, late in his life he got nutty and embraced 9/11 truthism and Holocaust denial.
http://www.amazon.com/Inherit-Stars-The-Giants-Book/dp/1470843897
http://www.mangareader.net/inherit-the-stars
http://www.sfsignal.com/archives/2010/07/free_fiction_inherit_the_stars_by_james_p_hogan/
James P. Hogan did the humans-are-from-elsewhere story up very nicely, thank you. Although he did have them coming from elsewhere in this same solar system.
It was complicated, in the Worlds in Collision, When Worlds Collide sense of the term.
I’m still working on the physics of moving planets from one orbit to another, so I’m not too sure about these contentions. When your history depends more on accident than on intentions, it doesn’t seem too convincing.
Our species has less genetic variety than is prudent, outward appearances notwithstanding, but the conventional explanations seem to handle that pretty well; Toba and that sort of thing. We also have DNA from other hominid groups including Neanderthal, (redheads, pay attention!)
I’d argue that we are not particularly well adapted for survival anywhere, much less a completely alien world with unknown fauna. Hogan had it right when he dubbed this planet the nightmare world. But we wouldn’t be better off anywhere else, and having to face anything more advanced than mushrooms.
What worked for us from the beginning, just as it permits our survival today, is our ability to cooperate, and to pass knowledge on to others. That is the change that came about, and allowed a loser species in the realm of nature red with fang and claw to not only survive, but to thrive.