Usually both sides have an expert witness, the implications of that are self-evident. Don't even need to factor in knowledge about human nature to understand wh

Usually both sides have an expert witness, the implications of that are self-evident. Don't even need to factor in knowledge about human nature to understand what is happening. To be fair, the deviation from the truth an expert witness may grant tends to be bounded. Whereas the deviation a lawyer may attempt is unbounded. In many cases the bounds don't matter much as the case contains sufficient uncertainly to be a contest of spin targeted at the psychology of the jury.