Imagine you’re a normal person. The year is 2016. Rightly or wrongly, you believe most of what you see in the media. You believe polls are broadly reflective of public opinion. You believe doctors and scientists are trustworthy and independent. You’re a decent, reasonable person who follows the rules and trusts the authorities. Imagine your shock, then, when Brexit, which you were assured couldn’t happen because it was a fringe movement led by racists for racists, happens. The polls, which widely predicted it wouldn’t happen, were wrong. The experts and pundits who told you day after day that it wouldn’t...