http://www.bbc.com/news/av/magazine-40852227/the-digital-guru-who-helped-donald-trump-to-the-presidency
A key insider from the Trump campaign's digital operation - Theresa Wong - unravels for the first time the role played by social media and Facebook's in getting Trump into the White House.
Jamie Bartlett learns how Facebook's vast power to persuade was first built for advertisers, combining data about our internet use and psychological insights into how we think.
