Technology can empower humans or replace them

“An economist at the conference added some meat to this story – the invention of the stirrup (which increased horse efficiency) and the railroad (which displaced the horse for long-range trips) increased the number of horses, but the invention of the car decreased it. This suggests that some kind of …” via IFTTT from http://amzn.com/k/k1CGKhY6QLWLoyJYug17Ew

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