Elon Musk argued the journals show the moment when OpenAI abandoned its mission. Credit: Aurich Lawson | Getty Images Greg Brockman never wanted to discuss his personal journal in public. But the OpenAI president has been stuck for days doing exactly that, while testifying in a trial in which Elon Musk has alleged that OpenAI abandoned its nonprofit mission to instead focus on personally enriching leaders like Brockman and Sam Altman. “It’s very painful,” Brockman told OpenAI lawyer Sarah Eddy during his second day on the stand. Although he’s not “ashamed” of any of the journal entries, he considers them to be deeply personal, he said. Rather than serving as a straightforward log of his actions or feelings, the entries reflect a stream of consciousness that meanders as it explores alternate viewpoints. Sometimes, Brockman explained, he would jot notes reflecting another person’s thoughts, just to feel them out for himself. Because of this, Brockman can appear self-contradictory at times, he testified.…