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Are we going to power the world with solar energy by 2027 ?
According to futurist Ray Kurzweil, we will. His rational is that cost/watt of solar energy goes down fast while the total amount of solar energy is growing exponentially, doubling every 2 years and has been doing so for the past 20 years.
So what do you think ? Is Kurzweil right with his prediction ? Why do you think he is right/not right ?