Gillianren: he certainly is committing something, astounding hubris at the least. My problem in more in the abstract here, Scott just reminded me of it: can lay observations be adequate to support a logical argument, or do they kind of automatically Beg the Question? Or is it a subjective whether the argument has merit, and by whose standard?
Jason Thompson: I think your assessment of Scott is spot on; his argument was perhaps not the best illustration of the issue I am trying to sort out. Let me try another favorite from the CT Hit Parade, the collapse of World Trade Center Building 7: WTC 7 was the first and only steel framed high-rise to undergo global collapse primarily due to fire. Evidence was removed from the site prior to performing a full investigation, so the NIST report is largely a model which was created to explain the observed collapse. Would a cynical CT guy be committing a logical fallacy by assuming the NIST findings were not a sound explanation , or would his lay observations be valid enough to logically debate them? In order to be logically sound, can one reject the findings of an expert in favor of evidence of the senses (then subject to debate), or is he automatically Begging the Question (thus logically unsound and essentially undebatable)?