Knott Lab Forensic SCIENCE has found the SBT, "Is IMPOSSIBLE". There are those here seeking to deny SCIENCE. I would encourage them to seek membership in the "Flat Earth Society". They will be most comfortable there.
Quite. They might conclude 'improbable' or highly 'improbable' depending on their evidence, but to say 'impossible' for such a scenario is highly unscientific.
Even if it were an improbable shot, and there were no evidence of more than 3 bullets, one would have to conclude luck was on his side and the shot was made.
Over the years, investigations have tended more towards the conclusion that the single bullet theory is more plausible. With the positioning of the seats and the angle of Connelly's body seen in the Zapruder film, it seems that what appeared to be implausible was in fact quite possible.
Firing at a complex, dynamic target, there is a very large number of possible outcomes - miss left, miss right, hit this or that, etc., etc. Even though each outcome is individually very unlikely, one will occur. Say one million people buy a lottery ticket; one person wins. It is unreasonable to say to that person, 'you could not have won', because the odds of winning are so low.
I can only suggest that the Knott Lab was working with poor evidence, or there was something improper going on.
The single bullet theory was proposed very quickly as a way to explain just 3 shots. It's easy to think, therefore, that it was contrived, especially as it is seemingly elaborate, so it is understandable that people would be sceptical of it. And some people find it difficult to change their opinion. (That's how someone like Galileo was persecuted for his discoveries.) It seems, even if the the SBT appeared to be made up on the spot, it may have been quite accurate, perhaps unlike much of the rest of the Warren Commission's affairs.