“Erroneous conclusions based on subjective data....”
Essentially the basis for all of your strenuous objections to any challenge to the Warren Commission Report. You attribute your own arguments to third parties then quote yourself as an authority. Nice work.
In this circumstance the ability to repeat any test, or experiment is confirmed by outside analysis of that work.
The best thing any researcher can do is have a skeptical eye on ALL the information until it can be corroborated by experiment or data analysis of those experiments.
The best example I can give for that is the work of Bellesiles on firearms in colonial times. The anti-gun crowd was singing it's praises until peer-review illuminated the falsification of factual data.
Same thing applies to the Kennedy assassination. Take any point you want to consider, the rifle, the composition of the bullets available, the location, the position of the witnesses, and delve into proving or disproving the information. When one 'fact' cannot be confirmed or corroborated by other information relative to that 'fact', it has to be discarded as false.
I do not consider myself as any 'authority' only a presenter of facts confirmed by my own observations and experiments. That they corroborate the information available doesn't make them any less valid.