Meta’s copyright battle with a group of authors, including Sarah Silverman and Ta-Nehisi Coates, will turn on the question of whether the company’s AI tools produce works that can cannibalize the authors’ book sales.US District Court Judge Vince Chhabria spent several hours grilling lawyers from both sides after they each filed motions for partial summary judgment, meaning they want Chhabria to rule on specific issues of the case rather than leaving each one to be decided at trial. The authors a...