The final stragglers testified on Wednesday in the Musk v. Altman trial. The witnesses generated few waves, aside from the revelation that Microsoft has so far spent over $100 billion on its partnership with OpenAI . Rather than focus on that, I wanted to bring you a candid observation that my colleague Maxwell Zeff and I can’t stop talking about after spending nearly three weeks watching the trial. The courtroom is littered with butt cushions. Several of the hard, wooden benches on the right side of US district Judge Yvonne Gonzalez Rogers’ courtroom are reserved for OpenAI and Microsoft’s attorneys, executives, and other members of the defense. About 10 people, including OpenAI CEO Sam Altman and general counsel Che Chang, have benefitted from thick black cushions—the plushest of them from the brand Purple; $120 from Target—that spare their butts from hours of sitting. Some cushions have rounded corners, while others are square.…