Purpose of Expert Witness..

Expert Witness

The function of an expert witness is to assist the Court in coming to a conclusion. It is not the function of an expert witness to be biased one way or another.
He should be an expert in his field and prepared to give his opinion dispassionately - no matter who is paying his fee.
The expert witness should be able to act either for the Plaintiff or the Defendant being there merely to put forward the facts to allow the Court to come to its own conclusion based on those facts.