Here is the problem with the 911 conspiracy theory's......

[William Seger]

81. This is NOT a "small point"

The Zapruder film shows JFK getting shot from behind, whether or not you understand why. That observation invalidates about 98% of all JFK conspiracy theories, and you have no cogent response to it. Perhaps you can join the camp that claims Zapruder is fake, too, but that would be difficult to justify after claiming that Zapruder was what convinced you there was a conspiracy.

> ... you have already determined it came from the rear so the evidence must fit that conclusion.

No, that is abject bullshit. The whole point here is that a valid conclusion must fit the evidence and yours does not. The entire reason for entering into this exchange was that your conclusion was based on incomplete evidence: You were unaware of that forward head-snap immediately after the hit, and you were unaware that the "back and to the left" motion didn't start until two frames later. But now that you are aware of that evidence, you cling to your faulty conclusion with an argument that is based on simply not understanding how momentum transfer works.

This is JFK conspiracism in a microcosm, and it set the pattern for 9/11 conspiracism.