For the vast majority of human history, it has been impossible for anyone – no matter their wealth or status – to watch a video of a man who eats entire blocks of cheese followed by a video of a woman who dresses like Dr Nick Riviera from The Simpsons. I’ve done this – I have done what my ancestors could never have dared to dream – thanks to TikTok. The video-sharing app needs no introduction, because you’ve undoubtedly already read endless scaremongering headlines claiming it’s about to destroy us all. Last week the London mayor, Sadiq Khan, blamed the...