Elon Musk has unveiled a pig called Gertrude with a coin-sized computer chip in her brain to demonstrate his ambitious plans to create a working brain-to-machine interface.
"It's kind of like a Fitbit in your skull with tiny wires," said Musk. What does this mean for the future if our brains have chip in them? Can we be hacked? Is it a sign of the End Times or the Mark of the Beast? Or something worse?

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