> Of these sources, only fission power is yet developed enough that it could actually bear the weight of industrial civilization with our present technology.
I call bullshit. Globally, power generation (not capacity) from nuclear is small compared to power generation fom renewables (with each of hydro, solar, and wind contributing roughly equally to that figure).
At this point, IMO, it is much more plausible that renewables will power the world than nuclear will, particularly when you realize that existing thermal burner reactors cannot do the job effectively, as there is not enough cheap uranium to keep such a large reactor fleet fueled for very long (thus further puncturing the "developed enough" argument.)