In my opinion I do not believe that eye witness testimonies should be the sole evidence in a court case. Mainly because like Scott Fraser said eye witness identification is foul. There is up to 280 documented cases where people have been wrongfully convicted of a crime. Three quarters of those cases involved only eye witness identification testimonies during the trial that convicted them. He said that even under the best observation conditions we can only detect and store bits and pieces of the entire experience in front of us. What this causes is incomplete stories. The brain will fill in some information that was not originally there. That is call reconstructive memories. People do not always see every little detail about an image or a person.
