Silicon Valley luminaries are busily preparing for when robots take over

Until a couple of years ago, Antonio Garcia Martinez was living the dream life: a tech-start up guy in Silicon Valley, surrounded by hip young millionaires and open plan offices. 

He'd sold his online ad company to Twitter for a small fortune, and was working as a senior exec at Facebook (an experience he wrote up in his best-selling book, Chaos Monkeys). But at some point in 2015, he looked into the not-too-distant future and saw a very bleak world, one that was nothing like the polished utopia of connectivity and total information promised by his colleagues.