I have a professor who once said, "We didn't leave the Stone Age because we ran out of stone."
His point, was basically, that we, as human beings, have a long history of adapting and coming up with new forms of technology.
Of course, I think it's arguable that we've never had to adapt in such a pressurized condition before. While we might have innovated our way out of the Stone Age, no one was holding a gun to our heads and saying, "Adapt, damnit!!"
So here's the million dollar question. How adaptable are we, exactly? How innovative? Can we build a world based on renewable carbon-free technology? Or is our modern way of life doomed when the oil runs out?
I don't know the answer. But we live in a world with 6.7 billion people on it. And more than I believe in anything else, I believe in human beings, and our capacity to innovate and adapt.
2 months ago