Mr. Speer does really terrific work but on the fundamental question of a conspiracy, which he believes happened, he is flailing around. He admits that he doesn't know who shot JFK, who the shooters were. That is, he doesn't know whether it was the CIA or the mob or anti-Castro Cubans or some combination of them. Or even some other group. Fine, good for him for admitting this. Very few conspiracists say "I don't know."
But he says he knows with "100% confidence there
was a conspiracy"? He knows this? So he says he has no idea who the shooters were (he's absolutely sure Oswald wasn't one of them) but they, again whoever they were, were working together? How can he know this with 100% confidence? Obviously, as the HSCA said, if there was a second shooter then JFK was "probably" killed as a result of a conspiracy. But "probable" is not 100%. That sounds pedantic but I don't think it is.
Anyway, he's very good at studying/finding primary sources, original material. He's a conspiracy version of Fred Litwin. But when he thinks, as it seems he too often does, that he can read a medical technical book for a month or two and opine on matters that people take decades-plus studying he is, as the saying goes, "over his skis". People spend decades and more on these highly technical issues. Then after earning their degree they often go back to school and study more; or keep up on the latest discoveries. It's not something you can pick up in a month or two. Or even a year. Or two. It's a lengthy process. It's why their education costs hundreds of thousands of dollars and they are paid that much for their work. Yet he thinks he knows this as well as these other men and women? Sorry, no.
Here is the CV of forensic pathologist Peter Cummings. He didn't earn this reading medical books for a year or two.
Link:
https://www.bumc.bu.edu/anatneuro/files/2015/11/Peter-Cummings-M.Sc_.-M.D.-CV.pdf"Dr. Cummings is board certified in anatomic pathology, neuropathology and forensic pathology. He earned his medical degree from the Royal College of Surgeons in Dublin, Ireland and completed his pathology training at the University of Virginia. He also earned a Masters degree in pathology from Dalhousie University in Halifax, Nova Scotia and a B.A. from the University of Maine. Formally, Dr. Cummings worked as a medical examiner at the Massachusetts Office of the Chief Medical Examiner. He was a member of the SwissAir Flight 111 identification team in 1998 and during the summer of 2002, worked on identification process of those who lost their lives in the 9/11 attack on the World Trade Center."