Refuted.
The method used to attempt to determine shadow affinity is one known to produce wrong results. It's an intuitive approach attempted by amateurs trying to reason from what they wrongly believe are correct first principles. It appeals to casual observation, but it is not based on science. When examples are shown that contradict the "theory" on which this method is supposedly built, and when formal mathematical proof shows how the "theory" fails, the practitioners resort to name-calling and refuse to talk to you. Professional? Hardly! They're charlatans and they know it.
The methods used by real experts to validate the shadows derive from projective geometry principles that have been in textbooks since the 1920s. (I have such textbooks.) They are provably correct methods and have been validated over many decades to produce reliable results.
Infocusinc stole the thunder on this one, but he merits the praise because he is not only correct but has been tireless in spending his time demonstrating the errors of the completely made-up methods invented by these non-expert conspiracy theorists. He and I have worked together both on the Kennedy case and on the Apollo case.
The taking of measurements in photographs and rectifying those to determine affinity among objects in the depicted scene is a science. It's a demanding science, exhibiting many pitfalls into which the JFK conspiracy theorists are on record as having falling into. Further, Jack White is on record expressing ignorance of the science. How much more devastating can you get? Not only does he admit he hasn't studied the science, his findings can be demonstrated to commit the errors the science was invented to avoid.
This, not some imaginary bias, is why the conspiracy theories are rejected.