Jesus Christ. Its like banging your head against a brick wall.(Talking about Guinn's NAA)
"His most important conclusion by far, however, scientifically defeating the notion that the bullet found on Connally's stecher had been planed, was that the elemental composition and concentration of trace elements of the three bullet fragments removed from Governor Connally's wrist matched those of a second bullet (the stretcher bullet). The stretcher bullet, then, had to be the one that struck Connally, which all of the other evidence already shown."
Reclaiming History pg. 814
The whole chain of evidence argument fails because there would be no reason for the conspirators to plant a bullet. If there was someone else on the sixth floor firing Oswald's gun, why would they need to plant an extra bullet? It doesn't make any sense.
1 the bullet at parkland was not planted. That is not the argument. The bullet at parkland was simply not CE399. There is nothing, and I repeat nothing to suggest CE399 was found at Parkland.
2 the NAA used to come to Bugliosis conclusion has comprehensively been debunked and Bugliosi knows it. It's junk science.
But almost immediately, there were doubts about the statistical analysis. Then, something unexpected happened. Two scientists from Lawrence Livermore Laboratory who were avowedly agnostic on the conspiracy question, Erik Randich, Ph.D. and Pat Grant, Ph.D., published a paper in the Journal of Forensic Science calling both Guinn's original report and the two papers by Rahn and Sturdivan into serious question.
One of Randich and Grant's objections was that, although Guinn worked in good faith, he didn't understand elemental bullet metallurgy, which was Randich's area of expertise. (Nor, they made clear, did Rahn or Sturdivan.) Guinn was wrong that Mannlicher Carcano bullets were unique because the trace levels of component Sb varied. The levels of antimony in MCC bullets do vary, they said. But so do Sb levels in many bullets that, like MCC shells, are jacketed. It is the non-jacketed bullets that have consistent levels of trace components. And the levels are controlled for a very good reason.
Randich and Grant also disproved another, key Guinn contention: that there is little variation in Sb levels within a single bullet
Finally, Randich and Grant analyzed the statistical model Guinn presented to the HSCA. They determined that the number of samples he had evaluated and the number of tests he performed were inadequate to draw the sweeping statistical conclusions Guinn, Rahn and Sturdivan had drawn.
http://www.maryferrell.org/wiki/ind...tron_Activation_Analysis_Proves_Oswalds_GuiltIn May 2007, a second paper appeared reporting on a chemical, forensic and statistical analysis of bullets derived from the same batch as those supposedly used by Oswald. The authors, Cliff Spiegelman, professor of statistics at Texas A&M and an expert in bullet lead analysis, William A. Tobin, the FBI's former Chief Forensic Metallurgist, William D. James, research chemist with the Texas A&M Center for Chemical Characterization and Analysis, and Stuart Wexler, brought considerable expertise to their study. As with Randich and Grant, they also concluded that, "evidence used to rule out a second assassin is fundamentally flawed." They reported that, "many bullets within a box of Mannlicher-Carcano bullets have similar composition." Thus, it was not true, as Guinn had said, that such matches are extraordinarily rare.