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Notes on Logic:

Informal, Deductive, and Inductive

Posts tagged with "ad hominem"

Tu Quoque, as Ad Hominem

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Aristotle wrote in his Politics:

... and that man is by nature a political animal. ... But he who is unable to live in society, or who has no need because he is sufficient for himself, must be either a beast or a god: he is no part of a state. A social instinct is implanted in all men by nature ... (1253a, translated by Benjamin Jowett)



Although many philosophers and psychologists, including Hobbes, Nietzsche, and Freud, have also used the notion of social instinct in understanding the rudiments of social phenomena, such an analysis is too vague to found basic principles of social psychology. Even so, the open texture of the concepts describing the social impulses of human beings, ubiquitous as they are, should not disqualify them for use in suggesting the psychological basis for the occurrence of tu quoque arguments in human negotiations, ostensibly for the settling and resolution of differences.

Just as consensus or common ground is sought to resolve disagreements in attitude and in belief, so likewise the claim, as well as criticism, of "you too" can help forge a similar social outlook among disputants. The tu quoque argument, however, is adopted not so much as a technique for building group cohesiveness as it is adopted as accusation or threat of separation: the locutor or speaker under scrutiny is claimed to be no better, claimed to be the same as, or claimed to be, in fact, worse than the person or point of view who was first criticized.

The tu quoque argument often occurs a social environment such as that just described, and I think it arguable that an even greater variety of circumstances than those hastily outlined here are related to the many and various claimed instances for various sub-types of the fallacy. Nevertheless, some indeterminacy of the application of term tu quoque to describe marginally appropriate fallacious passages, of course, is intrinsic to the notion of what it is to be an informal, as opposed to a formal, fallacy.

Consider this straightforward example of ad hominem from Time's letters section:

It is outrageous for Elizabeth Edwards to attack Hillary Clinton's electability. After all, the Clintons have a long track record of winning tough elections by comfortable margins, while John Edwards certainly can't make the same boast.



(Reba Simansky, "Inbox," Time, 170, No. 13 (24 September 2007), 10.)

Ms. Simansky is arguing since the Edwardses do not have a record of decisively winning close elections and the Clintons do have such a record, Ms. Edwards is mistaken in her belief that Ms. Clinton cannot be elected. A simple restatement of the argument is enough to indicate its lack of cogency.

Since the first and central issue of Ms. Clinton's electability is being dropped in favor of a personal judgment concerning Ms. Edwards' purported immoderate assertion, Ms. Simansky's letter is clearly an ad hominem. But is it tu quoque?

The standard tu quoque argument is based on the notion that a individual's criticism of a point of view or situation applies equally or even more so to the person making that claim about the individual. In other words, rather than trying to disprove Ms. Edwards' remark about Ms. Clinton's electability, Ms. Simansky accuses the Edwardses of having even a smaller chance of winning the election. Rather than trying to disprove a remark about someone's character or circumstances, one accuses the locutor of having the same character or circumstances.

The attendant fallacy of ambiguity of shifting between Ms. Clinton and the Clintons, as well as shifting between Ms. Edwards and the Edwardses, makes the conclusion of the quoted argument even more suspect.

<i>Tu Quoque</i> as <i>ad Hominem</i>

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The central purpose of "Notes on Logic" is to provide examples and brief analyses of logical argumentation. These analyses often call into question the exact nature of a fallacy. What is the difference between an argument and a persuasive appeal? Are persuasive appeals only fallacies when they adduce logical arguments?

I'm assuming that a fallacy can occur only in the context of an argument--not the kind of arguments involving emotional disagreements, but the kind of argument where a conclusion is claimed to logically follow from reasons or evidence presented.

Let's take a look at two passages from Time magazine's "Letters to the Editor" illustrating the tu quoque. In both examples, the issues in the original argument are dropped, and the character of the author of the argument is addressed, instead. Since the contextual evidence indicates the two replies are intended to oppose the original arguments, the tu quoque's cited here may be considered fallacious appeals.

Even though the tu quoque is an informal fallacy (a fallacy variant of ad hominem), its structure is most often like this, as described in Wikipedia:

A makes criticism P.
A is also guilty of P.
Therefore, P is dismissed.


When presented in this manner, the argument structure reveals the irrelevancy clearly. Another variant of the tu quoque is discussed by Julian Baggini, the editor of The Philosophers' Magazine, in "Bad Moves: Tu quoque."

The first passage is on the subject of horsemeat as a part of the diet of many countries.

Would You Dine Equine?
[Joel Stein] said that in the U.S. we oppose eating horsemeat because we think "like a 14-year-old girl." He sounds like an 8-year-old boy who pulls the wings off flies for fun. Perhaps Stein should also order some cat, dog and hamster meat.
Karla LaFitte
Spring, Texas


(Karla LaFitte, "Would You Dine Equine?" in "Letters," Time, 169 No. 10 (5 March 2007), 15.)

Notice how not only is there a tu quoque present, but also there is a parting hint of the slippery slope fallacy.

The second passage is related to a news story about NASA astronaut Lisa Marie Nowak:

A Woman Scorned
Jeffrey Kluger stated that "In the tut-tut world of exposé journalism, astronauts—particularly women—misbehave at their peril." I'm not sure exactly how women these days are "misbehaving," but I am sure that there are countless successful, powerful women who would be incensed by your characterization. Just take a look at the way our male politicians are acting and tell me that they are not the ones misbehaving at their peril.
Katie McGuire
Danville, Calif


(Katie McGuire, "A Woman Scorned" in "Letters," Time, 169 No. 10 (5 March 2007), 15.)

Again, this passage fits closely the formal structure described above for the tu quoque fallacy. Also, there's a suggestion of another compounding fallacy. The snob appeal of an ad populum purportedly adds support to Katie McGuire's conclusion by pointing out that "countless successful, powerful women who would be incensed by [the] characterization."

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