Dave Lee is Silicon Valley reporter for the BBC. Based in San Francisco, he has covered technology stories across the US since 2015. In this in-depth interview, he details how companies like Google, Facebook, Amazon and Tesla have an increasing impact on our lives, and the deep implications for society; argues that a growing ‘tech cynicism’ is now stifling innovation, and discusses the challenge of maintaining a working relationship with tech giants - whilst also holding them to account.