SBF's case didn't go his way because he was obviously lying and lying and lying ("I don't recall") and equivocating and evading when he wasn't outright lying, because he was guilty. There may have been instances where he was genuinely trying to communicate a salient truth in response to a prosecutor's rhetorical trap, but indulging him in those cases wasn't going to change the outcome. He should not have testified; he should have pled guilty.