Watch: Elon Musk says AI will lead to work being 'optional' and money 'irrelevant'

Elon Musk attends the Saudi Investment Forum at the Kennedy Center, Wednesday, Nov. 19 ...
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Elon Musk predicts work will be 'optional' in 20 years

Elon Musk has signaling that artificial intelligence and robotics could eliminate the need to work in the next few decades.