Meta is arguing that uploading pirated books via BitTorrent qualifies as fair use, as it was necessary to obtain the data for training its AI models. The company is facing a lawsuit from book authors who claim that Meta's actions constitute copyright infringement. Meta had previously won a victory in the case, with the court ruling that using pirated books to train its AI models was fair use. The new argument is an extension of this defense, claiming that the uploading of pirated books was also necessary and therefore fair use.