sandra: dr. baden, this is sandra smith. based on what we have been told about the knife that has been turned over -- >> right. sandra: -- they're describing the as a buck knife, some cases buck knives are folding knives. we're told what a typical buck knife would look like. >> right. sandra: would this fit description of a knife long sought-after by investigators. >> will, it depends. cut wounds, nicole simpson died of cut wound to the neck. it doesn't necessarily leave distinguishing feature, but stab wound in ron goldman or, would have a specific shape. the length, the width, the thickness and that was measured and photographs were, lots of photographs were taken. so t3ere has to be a, a comparison of the blade to the stab wounds and that takes more than just my memory. i have to sit down and go over the materials we have and that were taken at the time and that, so one way or another, if, remember, there has been a lot of false alarms in the past on this. remember they found a knife in the bushes some other knives and fo