It tells you all you really need to know about Posner that he claimed to have interviewed people whom he never interviewed. Posner claimed he interviewed Dr. Boswell, Marinaq Oswald, and James Tague, all of whom later said they had never spoken with Posner. Posner might have gotten away with his false interview claims if he had not quoted Dr. Boswell as telling him that he, Boswell, now agreed that the entry wound on the back of the head was 4 inches higher than where he and the other autopsy doctors said it was in the autopsy report and in their HSCA testimony. Dr. Gary Aguilar thought that sounded very suspicious, so he called Boswell, who adamantly denied every speaking with Posner and who insisted that he still believed the rear entry wound was where he, Humes, and Finck originally said it was.
Armed with this knowledge, researchers contacted other people whom Posner claimed he had interviewed and discovered that Marina and Tague had never spoken with Posner either.