Thomas Edison said this on New Year’s Eve in 1879, as he turned the switch on and off to thousands of incandescent lights in his Menlo Park lab.

In a way his prediction came true, in the sense that, at least in America and the advanced countries, candles are lighted mostly for special occasions, but by the poor as well as the rich.

How might his prediction prove relevant to our future today? For example, might we predict: “We will make electric cars so cheap to operate that only the rich will drive vehicles with internal combustion engines.”

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