We live in a blizzard of fake news, disinformation and conspiracy theories. It’s tempting to blame this on social media – which does indeed exacerbate the problem. And AI deepfakes promise to make the situation even worse. But at root this is not about technology: it’s about how humans think, as an astonishing case that long predates the internet reveals. This is an amazing story – about the perils of amazing stories. In November 1967, at the height of the war in Vietnam, a strange document was published in New York. Report from Iron Mountain was the work of a...