Skip to main content
Logical Fallacies

Begging the Question

Begging the question (petitio principii) is a logical fallacy in which the argument's premise assumes the truth of its conclusion, leading to circular reasoning that fails to provide genuine evidence.

THE IDEA

70 Begging the Question

Heather Rivera

Begging the question (petitio principii, Latin for “seeking the beginning”; also known as assuming the initial point, assuming the answer, chicken and the egg argument, circulus in probando, or vicious circle) is a logical fallacy in which the premise of an argument presupposes the truth of its conclusion; in other words, the argument takes for granted what it is supposed to prove. The gloss “to avoid,” used here, concerns evading the burden of proof. The technical expression does not mean “to ask” or “to lead to.” The problem is that the offered support depends on accepting the very claim under dispute.

Many people use the phrase “begging the question” incorrectly, employing it to mean “prompts one to ask the question.” That is not the correct usage. Begging the question is a form of circular reasoning, not a way to introduce a new inquiry.

The typical form of the fallacy is:

  1. Claim X assumes X is true.
  2. Therefore, claim X is true.

Any argument where the conclusion is assumed in one of its premises can be said to beg the question. Clear examples of this structure include:

  • If such actions were not illegal, then they would not be prohibited by law.
  • Circular reasoning is bad because it is not very good.
  • Free speech is important because everyone should speak freely.
  • The rights of the minority are every bit as sacred as the rights of the majority, for the majority’s rights have no greater value than those of the minority.
  • The death penalty is wrong, because killing people is immoral.
  • The country’s moral situation will only get worse if we continue to allow rated‑R movies in public theaters. (This assumes the very point that needs to be proved – that rated‑R movies actually decrease morality.)

Another common version wraps the assumption in a seemingly independent premise:

  • Paranormal activity is real because I have experienced what can only be described as paranormal activity. Here the premise already characterizes the experience as “paranormal,” assuming the existence of paranormal activity rather than demonstrating it.

  • God exists. After all, we exist, and the only way we could exist is if God created us. The second premise (“the only way…”) takes for granted that God exists, making the argument circular.

  • The Bible is true because God exists, and God exists because the Bible says so. Each statement is used to support the other, with neither providing independent evidence.

These examples need to be assessed in context. Applying a general moral rule, for instance, is not automatically circular; the question is whether the disputed conclusion has merely been assumed. A circular argument may be deductively valid, but it supplies no independent reason to accept its conclusion. Shared assumptions can be useful in a discussion without proving themselves.

Aristotle first identified begging the question in works like Prior Analytics and Topics, describing it as “asking the initial thing” or “asking the original point.” He noted that the fallacy occurs when one attempts to prove what is not self‑evident by means of itself – either because identical predicates belong to the same subject, or because the same predicate belongs to identical subjects. His analysis underscores that the error lies in assuming as a premise the very point that requires proof.

Misuse of the Term in Everyday Language

Despite its technical meaning, the phrase “begging the question” is frequently misused in conversation and the media to mean “raises the question” or “prompts the question.” This misuse is so common that it often goes unnoticed. For example:

Speaker 1: Miss Popular Actress is in court again; I can’t understand why they give her so much coverage. Speaker 2: Yeah, that really begs the question, why does anybody want to hear or read about her?

Or:

Timmy told me he is going to attend Big State University this fall. This begs the question, how will he do so far away from home?

In these exchanges, the speaker is not offering a circular argument; they are simply noting that a statement raises a further question. The media are particularly prone to this error. A news anchor might say, “Well, this certainly begs the question,” and then pose a new question prompted by the previous answer, when they actually mean “This prompts the question” or “This raises the question.” These instances show questions being generated, not logical fallacies being committed.

Begging the Question in Politics

Political arguments can hide disputed assumptions in definitions. They can also contain other errors that should be distinguished from circularity. Consider:

  • “Abortion is ending a life and murder is ending a life, so abortion is murder.” Describing both categories as “ending a life” does not establish that they are identical. As stated, this is a classification error; it becomes question-begging if it also assumes the disputed classification as a premise.

  • “Marriage is between a man and a woman, so same‑sex marriage is not marriage.” The premise presupposes a restrictive definition of marriage, which is exactly what needs to be demonstrated.

Such circular moves allow a speaker to appear to have made an argument while merely restating a position, something frequently seen in political debates when direct answers are evaded.

When to use it

  • In a political debate, when a candidate says 'We need to pass this law because it's necessary for the country's security,' without providing independent evidence that it is necessary.

  • In evaluating testimony, distinguish a dispute about an eyewitness's reliability from circular support that treats the witness as reliable merely because the witness says so.

  • In academic writing, check whether the claimed proof supports a theory independently or simply assumes the theory's conclusion.

  • When someone appeals to intuition, ask what supports that intuition; do not label the appeal circular unless the support assumes the disputed claim.

  • Identifying fallacies in political debates and media commentary.

  • Evaluating the logical structure of arguments in academic writing.

  • Improving critical thinking skills by spotting circular reasoning in everyday conversations.

  • Analyzing advertising claims that rely on unproven assumptions.

  • Political debates where a policy's effectiveness is assumed without evidence.

  • Philosophical arguments that simply assert the conclusion as a premise (e.g., the universe requires a creator).

  • In advertising, distinguish an appeal to popularity from a circular claim that a product is superior because it is the best.

  • Legal arguments where the guilt of the defendant is presupposed in the questioning.

FROM THEORY TO EVERYDAY LIFE

In practice

01

Example #1

The claim “paranormal activity is real” is supported by “I have experienced what can only be described as paranormal activity.” Calling the experience paranormal assumes “paranormal activity is real” rather than establishing that description independently.

02

Example #2

The conclusion “God exists” is supported by 1) “we exist” and 2) “the only way we could exist is if God created us”. The second premise already requires “God exists”, the point the argument is supposed to establish.

03

Illegal actions and prohibition

If such actions were not illegal, then they would not be prohibited by law. By itself, this restates a definition. It would not independently establish that a particular action is illegal.

04

Circular reasoning is bad

Circular reasoning is bad because it is not very good.

05

Bible and God

The Bible is true because God exists, and God exists because the Bible says so.

06

Minority rights

The rights of the minority are every bit as sacred as the rights of the majority, for the majority’s rights have no greater value than those of the minority.

07

Rated-R Movies and Morality

The country’s moral situation will only get worse if we continue to allow rated-R movies in public theaters. This assumes that rated-R movies decrease morality, which is the very point in question.

✳

A MOMENT TO REFLECT

Put it to work.

  1. Can you identify a situation in your own life where you used an argument that assumed its conclusion?

  2. How can you ensure that the premises in your argument do not already contain the conclusion you are trying to prove?

  3. Why do you think people often misuse the phrase 'begging the question' to mean 'raises the question'?

  4. Can you identify a recent argument you have encountered that uses circular reasoning?

  5. What evidence for your conclusion would remain if you removed the premise your listener disputes?

  6. Think of a political debate you have seen; did any of the participants commit the fallacy of begging the question?

  7. How would you distinguish a circular argument from a valid argument that relies on an independently supported general principle?

  8. How could you support a disputed premise independently, rather than merely rephrasing it?

  9. When evaluating a persuasive message, how do you check for hidden assumptions that are actually the point of debate?

References

  1. A Dictionary of Modern Legal Usage — Garner, Bryan A. (1995)
  2. Prior Analytics — Aristotle

CONTINUE THE CONVERSATION

Source texts

  • Wisdom Theory 100 Mental Models (2020) (Wisdom Theory)
  • Bad Arguments 100 of the Most Important Fallacies in Western Philosophy (Steven Barbone, Michael Bruce)
  • Logically Fallacious - The Ultimate Collection of Over 300 Logical Fallacies
← More logical fallacies