How much could you alter the film if Abraham Zapruder had shot in slow motion mode?

[Drew Phipps]

If you assume that your film editors are removing the same pattern of frames ( o x x, o x x ...) each time, the anomalies would still be anomalous. They would just happen over the course of 3 times the number of frames in the unedited version. If you speculate that the anomalies are caused by film editors alternating the pattern of deletion ( o x x, x x o ...) you could detect that by the motion of the limo against the background.

You could not cause some of the occupants in the limo to stay still while others are thrown forward by deleting frames.

Even though the method you describe (of removing 2/3 of the frames) could be done in the short time frame, it wouldn't produce the anomalies you see, or even the anomalies we never saw (that have been reported to us by Dan Rather). If you add some sort of content judgment into the process, you have a similar time frame problem that the people that claim the whole film was fabricated have.