[mukaiji]

I think it's a bit off on the predictions relating to energy. The best way to explain why is to borrow from Vinod Khosla's theory of energy black swans, and assume that the forms of energy we know and make use of today are going to be replaced by forms of energy we either don't know of or haven't yet managed to master.

500 years is simply a long, long, long time from now in terms of human progress. I think the energy description provided here might possibly fit a model of our energy mix 100 years from now. However, it's very unlikely to be the one we follow 500 years from now, simply because the basis for energy-related discoveries dictates that every few decades an entirely new form of energy is discovered and gets subsequently iterated upon until economically viable. It simply isn't factually reasonable to assume that we have already discovered all possible forms of energy production.

By the way, i did energy-related research which is why i wanted to point this out. Regardless of these flaws, I thoroughly enjoyed reading that essay.

tl;dr: energy-predictions 500 years out are not reasonable because of Vinod Khosla's theory of energy black swans.