Source: http://holocaustcontroversies.blogspot.com/2007/11/logical-fallacies-of-cesspit.html
Timestamp: 2019-04-20 13:02:52+00:00

Document:
We have shown in this series that Holocaust deniers are negationists not revisionists. CODOH's five years of existence have provided numerous illustrations of this rule. The most common tactic of negation used by deniers is to employ logical fallacies to establish false parameters of argumentation and evidence evaluation. Below are seven logical fallacies that CODOH posters employ for the purpose of pure negation, whilst making no attempt to build a revised body of knowledge.
removing one card results in the fall of a house made of cards.
This is a logical fallacy because it fails to treat each piece of evidence on its own merits, and resorts instead to an 'ad hominem' attack on the all of the thousands of personnel who collected and supplied evidence for the IMT at Nuremberg. There is always a high statistical probability that a body of evidence consisting of thousands of items will contain a small number of items whose provenance or authenticity cannot be guaranteed, but it is absurd to infer from this that all the items are tarnished by the small number of dubious ones.
The assumption that the discovery of one little crack will bring the whole building down is the fundamental fallacy of Holocaust Denial.
2. Source negation instead of source evaluation - CODOH adopts a straw man approach to Holocaust historians which assumes that historians do not take account of source ambiguity or the motivation of eyewitnesses. This is an assumption based on ignorance of how historians check sources against other forms of verification and convergence. CODOH rejects techniques of convergence, corroboration and source evaluation because it wishes to exclude, a priori, any source that supports the normative history of the Holocaust .
3. 'All documentation is fake unless proven otherwise to our satisfaction (a standard which is impossible to attain)' - CODOH's approach to Holocaust documentation is to assume that it should be dismissed unless its veracity can be proven beyond even the most unreasonable levels of doubt. For example, on this thread, Hargis insists that the chain of custody of any piece of evidence must be demonstrated at every stage of its existence. This is pure negationism because it asks Holocaust historians to refute a paranoid claim, when in reality the burden of proof lies with negationists to prove that their paranoia has some legitimate basis. Historians are entitled to assume that large collections of documentary evidence, held in multiple archives across the world, have not be faked by some dark conspiratorial force. They are not obliged to subject every document to an assumption of disbelief merely to satisfy the epistemology of a paranoid fantasist.
One such dialectical pattern has been studied by Krabbe (1995, p. 258), of a kind that corresponds to the fallacy van Eemeren and Grootendorst (1987, p. 291) call absolutizing the success of a defense, as characterized by the argumentative move, 'You didn't prove your point, so your point is false.' The argument from ignorance, analyzed in this way as a dialectical fallacy, could be described as an exaggerated statement of the results of a discussion. It is the tactic of implying that the discussion has already successfully reached the closing stage, whereas in reality, it should be seen as still being in the argumentation stage.
We can therefore see that the CODOH fallacy, 'You didn't prove your point, so your point is false,' is also a tactic, deployed specifically by Hargis as moderator, that attempts to impose false closure on a discussion. It is particularly ironic that a moderator should deploy this fallacy, because the moderator's function is meant to be to promote discussion, not foreclose it. An example of this tactic, relating to CODOH discussions of Chelmno, is given in point 5.
This statement contains two logical fallacies at once. Firstly, it begs the question about forensics and body disposal by assuming (without demonstrating) that gassing with a vehicle engine and incineration of bodies were impossible. Secondly, it is an appeal to ignorance because it assumes that an incompleteness of forensics at Chelmno proves that Grieser's letter is fake. Lack of Proof for A is therefore assumed to be proof of B.
6. A false hierarchy of evidence - This is also known as the 'Scissors, Paper, Stone' fallacy. It assumes that physical evidence always trumps documents, which in turn always trump eyewitnesses. This is clearly deployed by Hargis in the Chelmno example in Point 5. It is closely associated with the appeal to ignorance, because it is used as a device for falsely 'proving' that documents must be 'fake' and eyewitnesses must be 'lying' if there is any lack of proof in the associated forensics.
"Falsus in uno, falsus in omnibus," or "false in one thing, false in everything," was a Roman legal principle. If a witness may not be believed in one thing, he should not be believed in anything. This principle is as valid today as it was two thousand years ago.
A Roman legal principle indicating that a witness who willfully falsifies one matter is not credible on any matter. The underlying motive for attorneys to impeach opposing witnesses in court: the principle discredits the rest of their testimony if it is without corroboration.
Deniers ignore this crucial qualifier, which appears in classical US legal texts such as CHARLES C. MOORE, A Treatise on Facts, or the Weight and Value of Evidence (1908. Vol. II, § 1073).
Secondly, an alleged weakness in the testimony of Witness A tell us nothing about the veracity of witnesses B-Z. The CODOH technique of cherrypicking one witness in order to discredit dozens of others is, therefore, fallacious.
As to the credibility of a "perjurer," see United States v. Koonce, 485 F.2d 374, 378 n.8 (8th Cir. 1973); United States v. Spector, 793 F.2d 932, 939 (8th Cir. 1986); United States v. Reda, 765 F.2d 715, 718-19 (8th Cir. 1985); 1A Kevin F. O’Malley, et al., Federal Jury Practice and Instructions: Criminal § 15.10 (5th ed. 2000); Seventh Circuit Federal Jury Instructions: Criminal § 1.03 (1999); Ninth Cir. Crim. Jury Instr. 4.8 (1997). Both Koonce and Reda supported the trial court's rejection of a “falsus in uno, falsus in omnibus" instruction.
The anticipated falsus in uno instruction upon which Francis's counsel relied told the jury that it "may disregard the testimony of the witness in whole or in part" if the jury believed the witness committed perjury during the trial (emphasis added). Judge Dearie's response to the inquiring juror during deliberations did not refer explicitly to trial perjury, but he did say that "[a]fter considering all the evidence you decide on the basis of what you have heard whether to believe in whole or in part the testimony of a particular witness" (emphasis added).
Deniers who use this principle to insist that a witness's entire testimony must be dismissed are therefore ignorant of how the law works. More importantly, they expose once again their fallacious approach to questions of truth.
Thank you for an excellent debunking of the sort of logical fallacies engaged in by conspiracy theorists in general, Holocaust deniers in particular, and Bradley Smith/CODOH specifically. However, you mention at the very beginning that CODOH has had "five years of existence." I've not known Bradley Smith to cease operations yet, and I first came across his propaganda in 1993.
Sorry for the confusion. The 'five years' refers to the CODOH Revisionist Forum - CODOH's talkboard - which began operations on November 26th, 2002.
When I first read Bradely Smith's invocation of falsus in uno, falsus in omnibus as if to suggest it as an inexorable proposition of logic, I couldn't believe what I was reading. As an attorney, I'm familiar with the principle, as it is given as a jury instruction in basically ever jury trial in California.
believe anything that witness said. On the other hand, if you think the witness testified untruthfully about some things but told the truth about others, you may accept the part you think is true and ignore the rest.
all, part, or none of a witness’s testimony.
he or she described in court?
(c) How did the witness look, act, and speak while testifying?
personal stake in how this case is decided?
untrue just because it differs from other testimony.
[insert any other impermissible form of bias]].
David, many thanks for that excellent summary.
Could these fuckwits be more bloody stupid?

References: § 1073
 v. 
 v. 
 v. 
 § 15
 § 1