When Crossing or Responding to Your Opposing Expert Witness, Look for the L.I.E. (Large Internal Error) Dr. Ken Broda-Bahm cross-examines experts looking for the L.I.E (Large Internal Error).  He doesn’t always find one.  But when he does, he no longer needs to claim his expert would have done it differently or done it better.  He simply points out a liar—and dramatically wins the jury over.  Here’s how.