Jamie Bartlett is the director of the Centre for the Analysis of Social Media at the think-tank Demos, where he specialises in online social movements, the impact of technology on society, and new big data research methods. He is also author of the best-selling book The Dark Net (2014) about internet subcultures and Radicals (2017) about fringe political movements. Earlier this year he presented the BBC series The Secrets of Silicon Valley. In this podcast, Jamie talks to Max Sanderson about why Silicon Valley giants like Facebook, Google, Apple and Amazon have come in for increasing criticism recently, what impact the rise of data as the 'new oil' has had and to what extent the reaction against Silicon Valley is justified. Jamie is speaking in the session Silicon Valley: From heroes to zeroes? at the Battle of Ideas festival at The Barbican in London on 29 October 2017.