1. 'The fact that there is no evidence that the Reinhardt Camps were transit camps is not evidence that they were not transit camps'. This argument is a perverse application of Carl Sagan's dictum that 'absence of evidence is not evidence of absence'. The dictum was infamously deployed by Donald Rumsfeld in 2003 to claim that absence of WMD being found in Iraq is not evidence that WMD were never present. It has also been deployed in medical discussions, such as here, to claim that the failure of a product to produce a demonstrable effect is not evidence that such effects are always absent. Such claims have been debunked brilliantly by Dr. Marvin J. Schissel here. Schissel points out that:
While absence of evidence is not absolute evidence of absence, it is generally evidence of a high probability of absence.With reference to the Reinhardt camps, we do, of course, have a convergence of evidence from transport records, contemporary documents, the Korherr Report, the Hoefle Telegram, eyewitnesses, perpetrators and site investigations which shows, beyond reasonable doubt, that over a million Jews were murdered at the camps. Revisionists have had over sixty years in which to find records of transports taking Jews from the camps to the USSR, or records of resettlement, or even eyewitnesses of such resettlement, but have been unable to uncover any such evidence. They have been unable to explain why no defendants at postwar trials, including those such as Eichmann who had direct responsibility for 'evacuation' transports, ever used the 'transit camp' gambit in their defence, despite the fact that this would surely have been the most obvious defence available, had it been true. Moreover, they ignore the fact that the Soviets signed repatriation agreements with Poland in September 1944 and July 1945 but the total number of Polish Jews who returned under those agreements was only 230,700 (source: Yosef's Litvak's essay in Polonsky and Davies, Jews in Eastern Poland and the U.S.S.R., 1939-46, p.235).
Consequently, the 'absence of evidence' gambit is a fallacy because there are powerful reasons why evidence of resettlement should be present.
2. 'Evidence of gassing at camps such as Treblinka and Auschwitz does not meet an absolute standard of scientific proof'. This is the burden of proof fallacy. It is fallacious to demand that historians meet a higher burden of proof than would be required in a court of law. It is also fallacious to ignore the fact that the Nazis systematically destroyed evidence of their crimes so historians must reconstruct the Holocaust from fragmentary documentation. In view of the incomplete documentary record, the high degree of convergence in the remaining evidence is conclusive proof of genocide, beyond reasonable doubt. Moreover, even scientific experiments carried out in a laboratory are subject to an uncertainty principle, so the deniers' burden of proof is not even accepted by physical scientists.
3. 'The story keeps changing'. As with the burden of proof fallacy, this claim appeals to an audience that is ignorant of historical method, legal procedure and the sociology of knowledge. There is no historical event which is currently interpreted in exactly the same way that it was in 1945. Demanding that the Holocaust 'story' remains static is thus bone-headed.
4. 'The Soviets lied about Katyn and the Ukrainian famine so they could have fabricated the Holocaust and lied about that too.' This fallacy ignores two obvious facts. Firstly, evidence of Katyn and the famine did reach the west, both at the time and since, and the Russians did eventually admit to Katyn in the post-Glasnost era, so this denier fallacy simply begs the question as to why no evidence of Soviets fabricating the Holocaust has ever come to light. Secondly, the Soviets did not have a monopoly of access to Nazi documents or eyewitnesses. For example, the gas van documents submitted to the IMT (as bundle 501-PS) were discovered by the US 12th Army in Germany, not by the Soviets (see John C. Zimmermann, Holocaust Denial, pages 357-358).
5. 'The allies fabricated propaganda of German atrocities in World War I so obviously did so in World War II as well.' There is no evidence cited to support this claim, and it ignores the fact that many Nazi atrocities were documented by the Nazis themselves. Deniers are falsely equating atrocity stories from WWI that never had supporting evidence with a historical record from WWII that contains an overwhelming convergence of evidence.