Every so often I have lunch with a maths whizz who spent years in investment banking and is obsessed with the future of technology.
He is not a household name himself but he talks to a lot of people who are, and I always come away from our meal thinking about something to do with technology that I had not thought of much before.
This is not always cheering. My friend has long shared Elon Musk’s fear that artificial intelligence poses an existential risk to human civilisation.
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