This is no reason to reject the acoustical evidence. Even if we assume the Zapruder film is pristine and ignore all the scientific evidence of alteration, the acoustical evidence does not require us to believe that the dictabelt recorded all the shots that were fired during the assassination, as the HSCA's acoustical scientists themselves explained. Thus, the alleged inability to sync the dictablet with the Zapruder film cannot logically invalidate the acoustical evidence.

It certainly cannot explain the scientifically proven presence of gunfire N-waves and gunfire windshield distortions on the dictabelt; nor can it explain the amazing timing-movement correlations between the dictabelt's impulse patterns and the test-firing impulse patterns identified by the BBN scientists, correlations that were so powerful that even the NRC/NAS panel admitted there was 93% probability they occurred because the dictabelt recorded gunfire in Dealey Plaza during the shooting.

Some might wonder why Moore's version of the SBT has not been accepted by very many WC apologists.

That's a good question, and the answer says a lot about the lone-gunman camp.

For one thing, Moore's book, first published in 1990 (and reprinted in 2018),

did not receive the gushing endorsements and widespread promotion from legacy news media outlets that Posner's error-riddled book Case Closed received when it was published in 1993. Many amateur WC apologists who post in online JFKA discussion forums have either never heard of Moore's book or have never read it.

Most WC apologists who have read Moore's book, or who at least know about his version of the SBT, don't accept his SBT because it poses some serious problems for the most popular version of the SBT, i.e., the Z221-224. I suspect that some of them reject Moore's SBT for the additional reasons (1) that Moore's explanation for the Tague wounding contradicts Posner's and Max Holland's explanations, and (2) that it also requires the pavement bullet to do double duty by assuming the bullet not only sent a fragment streaking toward the Tague curb but sent pieces of concrete and possibly metal streaking toward JFK starting at Z187.

I know one of the reasons that many WC apologists don't like Moore's SBT is that Moore frankly admits that the pre-Z224 bunched-clothing theory is ridiculous on its face and that it is refuted by hard photographic evidence. Moore correctly observes that the only time JFK's coat and shirt were markedly bunched was the timeframe between Z225 and Z237. He contends that the coat and shirt were bunched enough from Z225-237 to account for the low location of the rear bullet holes and for the back wound's location several inches higher. This is actually a plausible argument, but most SBT believers reject it because their SBT requires a Z221-224 magic-bullet hit. 

Moore believes that JFK's Z200-237 reactions were in response to being sprayed by concrete chips and possibly metal fragments that were sent flying by the bullet that hit the pavement near the limo, and that the SBT hit occurred at Z237.

This brings us to another reason that most WC apologists don't accept Moore's SBT: To his great credit, Moore views as decisive Connally's selection of Z234 as the moment of impact, and he freely acknowledges that Connally's right shoulder is forcefully driven downward starting in Z238. He posits that the impact occurred at Z237, but he allows that Connally may have been correct and that Z234 is the earliest Connally could have been hit. These credible, science-based, and photographically confirmed arguments are wholly unacceptable to published WC apologists and amateur lone-gunman theorists alike because they destroy the Z221-224 SBT.

Here's a stabilized GIF of Wiegman stumbling, bumbling and doing cartwheels across the knoll!!
But seriously, we can see a stationary Wiegman laying across the steps who then starts to get up and for reference we can see an actual moving man as the cameraman in the lower right enters the frame.



JohnM

Oswald was a political kook.  He had demonstrative a willingness to commit a political assassination with Walker.  That is a big step separating him from 99% of other loons.  Oswald selected Walker because of his right-wing views and he was a target of opportunity because he lived in Dallas.  JFK was largely a target of opportunity because he literally came to Oswald.  Oswald did not select him.  JFK, as president of the United States, literally drove by Oswald's place of employment in an open car.  Oswald must have thought he was the luckiest guy in the world.  The opportunity to kill the head of the political system that he despised dropped right into his lap.