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Ad hominem

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An ad hominem argument is a specific way of debating that shifts focus away from a topic. The term comes from a Latin phrase meaning "argument against the person." Instead of addressing the actual facts or logic of a claim, the speaker attacks the person making the claim. This often involves using a person's character, motives, or personal traits as a diversion. By doing this, the attacker avoids a genuine debate about the substance of the issue.

Football in Bloomington, Indiana, 1995
Football in Bloomington, Indiana, 1995

It is often compared to a football player aiming for the goalkeeper rather than the ball. This tactic aims to discredit an idea by discrediting the individual behind it.

There are several distinct types of ad hominem arguments used in various contexts. One common type is the abusive ad hominem, which is a direct attack on a person's character. This is often considered counterproductive because it makes healthy dialogue very difficult to achieve. Another type is the circumstantial ad hominem. This occurs when someone suggests a person is biased because of their job, wealth, or personal relations. For example, a person might claim a speaker's argument is wrong simply because their professional circumstances favor a certain position.

Aristotle Altemps Inv8575
Aristotle Altemps Inv8575

Another important category is the tu quoque argument, which translates to "you also." This happens when a speaker responds to an argument by claiming the original person is a hypocrite. A classic example involves a doctor advising a patient to lose weight. If the patient points out that the doctor is also overweight, they are using a tu quoque response. While the doctor may be inconsistent, the medical fact that weight loss is healthy remains true. The person's behavior does not change the logical validity of the original claim.

Guilt by association is a fourth type of ad hominem attack. This method involves accusing an individual because they are connected to a person or group with a bad reputation. The attacker implies that the individual's views are questionable because of these associations. This tactic is frequently seen in social and political debates. For instance, during the 2008 US election, Sarah Palin linked Barack Obama to Bill Ayers, a leader of a terrorist group. This was an attempt to use an association to cast doubt on a person's character.

History shows that the study of these arguments dates back to ancient Greece. Aristotle is credited with first distinguishing between personal attacks and logical arguments. In his work, *Sophistical Refutations*, he described a class of sophistry involving ambiguous questions about people. Later, in the 17th century, John Locke revived the examination of these argumentative styles. In the mid-19th century, the English logician Richard Whately provided a broad definition. He noted that such arguments are addressed to a person's peculiar circumstances or past conduct. By the 20th century, the term became firmly linked to the concept of a logical fallacy.

Philosophers have debated whether all such attacks are actually fallacious. In the second half of the 20th century, Charles Leonard Hamblin challenged the idea that personal statements are always fallacious. He suggested that a statement against a person might not be a fallacy if it is not used as a premise for a conclusion. Similarly, Douglas N. Walton argued that circumstantial arguments can sometimes be valid. For example, if a witness in a trial has a history of lying, a lawyer might argue they should not be trusted. In this specific case, the person's character is directly relevant to their reliability as an authority.

In specialized philosophical circles, a different version called the "argument from commitment" is used. This is a dialectical strategy where a thinker uses the opponent's own beliefs and assumptions against them. This is also known as *argumentum e silentio*. Unlike the common fallacy, this method does not attack the person's character. Instead, it uses the target's own principles to show that their current argument is unsound. This is a constructive way to debate because it relies on the principles the opponent has already conceded.

Today, understanding these arguments is vital for navigating political and social discourse. Many political attacks rely on the "precedent" fallacy, claiming someone is wrong now because they were wrong in the past. Others use "behavioral" attacks, claiming a person's past conduct proves they are currently indecent. These tactics can make debates feel like "dirty tricks" and prevent productive conversation. Recognizing these diversions allows people to stay focused on the actual facts and logical truths being discussed.

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