The platforms and devices provided by Big Tech pervade every aspect of our private and public lives. They promise a more efficient, social and entertaining world, but how far should we trust this new algorithmic oligarchy with our future? Author and futurist Lucie Greene has spent the last few years studying this question for her book, ‘Silicon States’. I caught up with her in New York to discuss what drives these organizations, and what might happen when they move beyond social media and search, to reinventing other sectors like space travel, education, finance or the housing market.