"Unscientific"! LOL. Let's see: there are prints, photos, an order form in Oswald's handwriting, serial number match, Oswald's PO Box, an alias linked to Oswald via a fake ID in his possession at the time of arrest, the rifle is found at his place of work, there is no accounting for any other rifle in Oswald's possession. Whew. It's hard to imagine what more evidence there could be. I wonder what constitutes "scientific" evidence if all of this does not do the trick. How much such evidence is there to link John Wilkes Booth the gun he used to kill Lincoln? I guess there is doubt of his guilt as well. I'm sure there are witnesses who got his age, height, or color of his clothes wrong. So there must (false) doubt.