I think it's wise to evaluate the evidence, and point out the inconsistencies with arguments. The more you do so, the more the truth comes out to shine, and it seems that, with all the evidence available, the most likely explanation is that Oswald pulled the trigger, and acted alone.

What you basically seem to be saying is, "It's impossible for anyone to really know, so we should act as if all answers are possible"... which seems pretty silly to me.

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"A long habit of not thinking a thing wrong gives it a superficial appearance of being right." -- Thomas Paine

Being intelligent is not a felony. But most societies evaluate it as at least a misdemeanor. -- Heinlein

Creationists make it sound as though a "theory" is something you dreamt up after being drunk all night. -- Isaac Asimov