Personally, I think the best chance for the haman race is a return to steam power and the horse and cart era.
LOL! I'm just imagining Simon's steam-powered JWD server.
Let's not rule out intelligence that advances beyond our's that may have done so without the exploitation of earth's resources.
And how would that work, precisely? You can't build a fire without cutting down a tree (dead wood runs out pretty quickly and even that is a "resource") You can't evolve without death. You can't "advance" your intelligence without trial and error. I think I will rule out that any intelligence could possibly advance without the utilization of any resources from any planet. Unless you'd like to refine your statement?
left us some clues on purpose
How would they know we were coming? Evolution is random, remember? Unless you are willing to go out on a limb and state that intelligent, self-aware beings are the inevitable result of evolution - which brings the whole God thing into it again.
CZAR