Just over a decade ago, I published one of those books with an annoying subtitle beginning with the word ‘how’. It was called Counterknowledge: How We Surrendered to Conspiracy Theories, Quack Medicine, Bogus Science and Fake History. My targets included Michael Moore, Creationists and homeopaths. I concluded that we couldn’t stop anyone circulating their ‘counter-knowledge’ on the internet, but we could at least hold to account ‘lazy, greedy and politically correct academics’ who had abandoned scientific methodology in favour of postmodernism.