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Elon Musk's Neuralink showed off its technology allowing a monkey to play video games with its mind. Scientists have been able to get monkeys to control computer cursors via neural interfaces since 2002. It's an important test of Neuralink's technology, but not a revolutionary piece of science. See more stories on Insider's business page.This week, Neuralink, a company founded by Elon Musk that specialises in neural interface technology, unveiled...