The jury's main task is to weigh the testimony of witnesses, I guess. That's not a technical matter, for lawyers to evaluate; it's a question of whether a witne

The jury's main task is to weigh the testimony of witnesses, I guess. That's not a technical matter, for lawyers to evaluate; it's a question of whether a witness is reliable, which is a judgement. I don't see why a trained lawyer is going to be better at that than a layman.