West asks if an expert said voice ID of this sample is possible, would Nakasone agree. Nakasone says he would use different terminology. He would find the (expert's) claim disturbing. Such ID is not feasible. A claim to be able to ID the speaker from this sample would probably disturb other scientists as well.
On recross, Mantei tries to get the expert to agree that this sample is okay; that it is acceptable for an expert to opine that the speaker was or was not a certain person, from this sample, using one of the three methods discussed so far in this hearing.
The expert says everybody is entitled to their own opinions. Expert could have done better by saying his quarrel is with applying the methods to this sample, and reaching a conclusion other than "not enough data to decide."