A defiant Elon Musk on Wednesday took the stand in a jury trial to defend himself against accusations that he engaged in a pattern of deceptive behavior that misled investors as he attempted to back out of his $44 billion deal to buy Twitter before he finally completed the takeover.The civil trial in San Francisco centers on a class-action lawsuit filed just before Musk took control of Twitter, a social media service he renamed X, in October 2022, six months after agreeing to buy the embattled c...