[wideminded]

I'm not a forensic expert but I am a physician, with significant knowledge of bullet wounds, and if you watch the films, Kennedy recoiled backwards from the second shot. Some say that is a decerebrate reflex due to brain injury, I say decerebrate reflex occurs in 10-15 seconds not one.

The physicist Luis Alvarez, who wrote an extensive report on the Zapruder film, showed that the backwards head movement can be explained by the forward ejection of brain matter. Alvarez is a Nobel Prize winner who worked on the atomic bomb.

[kayak]

Might the backwards motion of his head also have been partially due to the sudden acceleration of the car. If my recollection is even close to correct, as soon as the shots rang out the driver sped up quickly .... or so accounts were saying at the time. And it certainly makes sense.

[CholeraJoe]

Work on the atomic bomb does not necessarily establish expertise in wound ballistics. I have extensive knowledge about Critical Nuclear Weapons Design and Deployment Information (CNWDDI) I was cleared for that level of security when I was in the USAF.

My opinion of the possibly faked autopsy photos (if they don't have an AFIP Official stamp, they're photoshop fakes) is that a tangential impact occured in the right frontal area and sliced off the right side of his head.

[gooleyman]

"The physicist Luis Alvarez, who wrote an extensive report on the Zapruder film, showed that the backwards head movement can be explained by the forward ejection of brain matter. Alvarez is a Nobel Prize winner who worked on the atomic bomb."

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I also heard that they did tests on melons of some sort and had to do many, many test shots to get one to recoil backwards like Alvarez' theory purports.