Has dopamine got us hooked on tech?

Silicon Valley is keen to exploit the brain chemical credited with keeping us tapping on apps and social mediaIn an unprecedented attack of candour, Sean Parker, the 38-year-old founding president of Facebook, recently admitted that the social network was founded not to unite us, but to distract us. “The thought process was: ‘How do we consume as much of your time and conscious attention as possible?’” he said at an event in Philadelphia in November. To achieve this goal,