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Once, after connecting his nerves to an array of electrodes in 2002, he let his wife use her brainwaves to take control of his body.

It was the first time the nervous systems of two humans had communicated electronically.

“It was quite an intimate feeling,” he says.

This isn’t just for fun. He is certain that without upgrading, we humans will someday fall behind the advances of the robots we’re building — or worse.