>> meyer sees that as a recipe for disaster and working to get police departments to change the holster configuration, separating the taser from the handgun. randy kay, cnn, new york. >> and not everyone buys into the theory. joining us is phil stenson, a professor of criminal justice, and bill lewinski who testified at the bart trial and retained as a consultant with the attorney in this case and tulsa county sheriff's office and lou gehrig os with us. and you explain this as junk science. explain. >> it is junk science. it is not expert testimony. there is no -- there is no testable theory and not subject to peer review. we don't know the error rate and it is not accepted by the giantivic community.