Coal and gas are still way bigger than oil or nukes in our grid, but my point is really just that an exponential curve can catch up with a linear one in a surprising way. 14% doubling every few years means we could be only a decade away from 100% clean energy.

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That concept isn't really compelling to the masses until one focuses on the "knee" of this exponential curve -- the point where the perpetual doubling of technological growth skyrockets and negates the linear models of progress that people like economists have relied on for so long.

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