AT THE END of October, Elon Musk launched his website Grokipedia, the billionaire’s latest attempt to shape the information people access online. Alongside biases shown in descriptions of racist conspiracy theories, Grokipedia contains some straightforward factual errors – including misnaming the alleged attacker in the Parnell Square stabbing of 2023. The website, whose content is all AI-generated, is supposed to be a counter-balance to what Musk and other prominent figures on the American right say is Wikipedia’s “left-biased” content. On the day of the website’s launch, Musk said Grokipedia would carry “the truth, the whole truth and nothing but the...