Elon Musk seems tired and cranky. On Thursday, he took the stand for the third day in a four week trial stemming from his lawsuit alleging that OpenAI abandoned its mission and should be blocked from taking the company public later this year. If Musk plays his cards right, Sam Altman could be ousted and OpenAI would remain a nonprofit forever. But Musk stumbled at least seven times in ways that possibly put his chances at winning in jeopardy. Most notable, 1 OpenAIs lawyer managed to get him to...