A Fallacy Recognition Handbook

An ad Hominem is a general category of fallacies in which a claim or argument is rejected on the basis of some irrelevant fact about the author of or the person presenting the claim or argument. Typically, this fallacy involves two steps. First, an attack against the character of person making the claim, her circumstances, or her actions is made (or the character, circumstances, or actions of the person reporting the claim). Second, this attack is taken to be evidence against the claim or argument the person in question is making (or presenting). This type of “argument” has the following form:

1. Person A makes claim X.

2. Person B makes an attack on person A.

3. Therefore A’s claim is false.

The reason why an ad Hominem (of any kind) is a fallacy is that the character, circumstances, or actions of a person do not (in most cases) have a bearing on the truth or falsity of the claim being made (or the quality of the argument being made).

Example#1:

Bill: “I believe that abortion is morally wrong.”

Dave: “Of course you would say that, you’re a priest.”

Bill: “What about the arguments I gave to support my position?”

Dave: “Those don’t count. Like I said, you’re a priest, so you have to say that abortion is wrong. Further, you are just a lackey to the Pope, so I can’t believe what you say.”

Example#2:

John: “Sally was saying that people shouldn’t hunt animals or kill them for food or clothing. She also…”

Wanda: “Well, Sally is a sissy crybaby who loves animals way too much.”

John: “So?”

Wanda: “That means she is wrong about that animal stuff. Also, if we weren’t supposed to eat ‘em, they wouldn’t be made of meat.”

See also: Ad Hominem (In Middle East Fallacies)

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This book is copyright 2002 by Dr. Michael C. LaBossiere. It may be freely distributed for personal or educational use provided that it is not modified and no fee above the normal cost of distribution is charged for it. Visit my web site at www.opifex.cnchost.com.

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A Fallacy Recognition Handbook:Ad Hominem

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