turingtest
Mistral, mistral wind...
In the amazing, highly improbable event that some piece of solid-gold, smoking-gun evidence were to emerge, such that everyone from Oliver Stone to Gerald Posner rose as one and said "Yes! It's solved, once and for all! Now we can go one with our lives!" there would still be those who would look askance and say "I knew it! This solves nothing! Stone and Posner are in on it too! Those sellout bastards!"
Because in fact nobody really wants to know who killed JFK. The assassination industry is making too many people too much money, writing books and giving lectures and making movies about the thing. And Americans love a good mystery, especially if it can be shrouded in conspiracies involving such dark forces as the CIA, the FBI and the mafia, just to scratch the surface.
To me, the die was cast when the Secret Service burst out of Parkland Hospital with that casket and raced to the airport. If they'd left the body at Parkland, a thorough autopsy would've rendered moot most of the subsequent CT catechism.
Agree with your point about the "assassination industry"; these are folks who would rather not have their bottom line threatened by acceptance of the mundane truth (as opposed to their more exciting "truth").
I'm not so sure, though, that an autopsy at Parkland would have made moot any of the catechism (good word for it- theology is what it amounts to). It would have been (necessarily) seen by CTists as just one more piece of the cover-up, only in Dallas instead of DC; same scenario, different setting.