What effect does it have on a writer to be constantly confronted with facts that interfere with his or her stories about the world? … [Mostly] fact checking — not just the experience of being fact-checked but often the mere expectation of it — makes you pay more attention to the world around you. It compels you to stop insisting on what you want things to be and to come to terms with what they are. It is, above all, a humbling experience, a perpetual process of correction that, far from instilling a false sense of certainty, makes you ever more alert to the myriad ways you can screw things up by falling in love with your own ideas or accepting a conventional truth at face value.