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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To think there’s nothing wrong with a circular argument?

66 replies

SnugShaker · 15/08/2025 10:00

People always dismiss circular arguments as if they’re inherently flawed but sometimes they make perfect sense. If something is true by its own definition or widely accepted as fact, isn’t that just reinforcing a logical truth rather than a flaw? Not all circular reasoning is meaningless - some of it is just common sense.

OP posts:
VeryStressedMum · 15/08/2025 10:30

SnugShaker · 15/08/2025 10:24

No, it’s not about that. It’s a broader point about how some self-evident truths get dismissed as “circular” when they’re really just definitions.

Isn’t this different to what you said before?
Some people may state a definition or fact is a circular argument if they don’t understand what a circular argument is

SnugShaker · 15/08/2025 10:36

VeryStressedMum · 15/08/2025 10:30

Isn’t this different to what you said before?
Some people may state a definition or fact is a circular argument if they don’t understand what a circular argument is

Not different, just clarifying. I think people sometimes label something circular when it’s actually just stating a definition or self-evident fact. It’s more a misunderstanding of the term than a flaw in the reasoning itself.

OP posts:
TheOtherAgentJohnson · 15/08/2025 10:44

SnugShaker · 15/08/2025 10:36

Not different, just clarifying. I think people sometimes label something circular when it’s actually just stating a definition or self-evident fact. It’s more a misunderstanding of the term than a flaw in the reasoning itself.

I think people are often just thick.

123ZYX · 15/08/2025 10:46

“All bachelors are unmarried men” isn’t circular because it provides more information if you didn’t already know what a bachelor is. The definition explains that it’s based on marital status and the sex and age of the individual.

”A woman is someone who lives as a woman” is circular because you need to know what a woman is to identify how one lives. And the only way to do that is to understand the definition of a woman…

InterestedDad37 · 15/08/2025 10:49

This is just going round and round 🤔😉😀
I'll get me coat 🙂

Floatlikeafeather2 · 15/08/2025 10:53

SnugShaker · 15/08/2025 10:36

Not different, just clarifying. I think people sometimes label something circular when it’s actually just stating a definition or self-evident fact. It’s more a misunderstanding of the term than a flaw in the reasoning itself.

So, in your op you're not defending "circular arguments" at all but saying that other people don't know what they are? You seem to be changing tack here. Is that because we're all saying that you don't seem to know what they are?

VeryStressedMum · 15/08/2025 10:54

This is not the same as you said previously, but yes people may label a definition as circular if they don’t understand it.
But there’s no real reasoning behind a circular argument, the person making the statement or premise isn’t using logical reasoning to prove the statement they are using the statement to prove the statement’s validity.
sorry if I’m explaining it badly.

niadainud · 15/08/2025 10:56

SnugShaker · 15/08/2025 10:15

For example: “All bachelors are unmarried men.” It’s circular in that the definition repeats itself but it’s still true and valid because that’s exactly what a bachelor is.

The definition doesn't repeat itself at all. The word is "bachelor" and its definition is "an unmarried man". Where's the repetition?

Just because you already know that a bachelor is an unmarried man doesn't mean it's a repetition.

Also a definition is not an argument.

If you said, "An unmarried man is a man who isn't married" that is a very poor definition owing to its repetitive nature, but it's still not an argument.

Bollihobs · 15/08/2025 10:58

InterestedDad37 · 15/08/2025 10:49

This is just going round and round 🤔😉😀
I'll get me coat 🙂

😂😂😂👏

SnugShaker · 15/08/2025 10:59

Floatlikeafeather2 · 15/08/2025 10:53

So, in your op you're not defending "circular arguments" at all but saying that other people don't know what they are? You seem to be changing tack here. Is that because we're all saying that you don't seem to know what they are?

No, my OP was saying that what some people call “circular” can sometimes be valid, when it’s actually just a definition or self-evident truth. That’s consistent with what I’ve said since. I’m not changing tack, just clarifying because some replies interpreted it differently.

OP posts:
TheOtherAgentJohnson · 15/08/2025 11:01

This reply has been deleted

Message deleted by MNHQ. Here's a link to our Talk Guidelines.

irregularegular · 15/08/2025 11:01

myplace · 15/08/2025 10:17

A circular argument would be All bachelors are bachelors.

A circular argument would be.

John is a batchelor.
How do you know?
Because he is unmarried?
How do you know he is unmarried.
Because he is a batchlor.

Isittimeformynapyet · 15/08/2025 11:03

SnugShaker · 15/08/2025 10:24

No, it’s not about that. It’s a broader point about how some self-evident truths get dismissed as “circular” when they’re really just definitions.

Do they?

irregularegular · 15/08/2025 11:04

”A woman is someone who lives as a woman” is circular because you need to know what a woman is to identify how one lives. And the only way to do that is to understand the definition of a woman…

I would say that is a circular definition rather than a circular argument. And I suppose you could stop it being circular by expanding on what it means to live as a woman without referring to women. I suspect it would be a very bad definition of "woman" however!

SnugShaker · 15/08/2025 11:04

niadainud · 15/08/2025 10:56

The definition doesn't repeat itself at all. The word is "bachelor" and its definition is "an unmarried man". Where's the repetition?

Just because you already know that a bachelor is an unmarried man doesn't mean it's a repetition.

Also a definition is not an argument.

If you said, "An unmarried man is a man who isn't married" that is a very poor definition owing to its repetitive nature, but it's still not an argument.

Edited

Yes, a strict definition is not an “argument” in the formal sense but people often lump it in when dismissing something as circular. Even in your unmarried man example, it might be a clumsy definition but my point is that some statements get written off as circular reasoning when they’re really just stating a definition or a self-evident truth.

OP posts:
Floatlikeafeather2 · 15/08/2025 11:06

SnugShaker · 15/08/2025 10:59

No, my OP was saying that what some people call “circular” can sometimes be valid, when it’s actually just a definition or self-evident truth. That’s consistent with what I’ve said since. I’m not changing tack, just clarifying because some replies interpreted it differently.

If it's a definition of a "self-evident" truth, then it's exactly that - a definition and not an argument/discussion/debate of any kind - surely?

irregularegular · 15/08/2025 11:07

We really need an example of the kind of thing you have in mind OP

TheOtherAgentJohnson · 15/08/2025 11:08

SnugShaker · 15/08/2025 11:04

Yes, a strict definition is not an “argument” in the formal sense but people often lump it in when dismissing something as circular. Even in your unmarried man example, it might be a clumsy definition but my point is that some statements get written off as circular reasoning when they’re really just stating a definition or a self-evident truth.

There's nothing clumsy about "an unmarried man" being the definition of "bachelor". It's very concise.

Why don't you just admit that you fucked up and didn't know what circular reasoning is?

SnugShaker · 15/08/2025 11:10

Isittimeformynapyet · 15/08/2025 11:03

Do they?

Sometimes yes, I’ve seen it happen in debates where people dismiss a statement as circular when it’s really just defining terms.

OP posts:
VeryStressedMum · 15/08/2025 11:11

SnugShaker · 15/08/2025 10:00

People always dismiss circular arguments as if they’re inherently flawed but sometimes they make perfect sense. If something is true by its own definition or widely accepted as fact, isn’t that just reinforcing a logical truth rather than a flaw? Not all circular reasoning is meaningless - some of it is just common sense.

This is your op.
Circular arguments are, imo, inherently flawed because making a statement then using that statement as evidence of the statement doesn't make sense to me.

SnugShaker · 15/08/2025 11:12

Floatlikeafeather2 · 15/08/2025 11:06

If it's a definition of a "self-evident" truth, then it's exactly that - a definition and not an argument/discussion/debate of any kind - surely?

Exactly, that’s my point. A definition isn’t an argument in the formal sense but people sometimes dismiss it as “circular reasoning” when it’s really just stating what something is. I’m saying those shouldn’t automatically be written off as flawed, because they’re not trying to be persuasive arguments in the first place.

OP posts:
Isittimeformynapyet · 15/08/2025 11:13

SnugShaker · 15/08/2025 11:10

Sometimes yes, I’ve seen it happen in debates where people dismiss a statement as circular when it’s really just defining terms.

This thread is now what I consider to be a circular argument. It's not going anywhere.

Is that the joke OP?

RedNine · 15/08/2025 11:14

OP would you indulge me and pop up an example of what you are thinking of.

BlueJuniper94 · 15/08/2025 11:17

SnugShaker · 15/08/2025 10:24

No, it’s not about that. It’s a broader point about how some self-evident truths get dismissed as “circular” when they’re really just definitions.

Really need some concrete examples for this discussion

MamboNumber2 · 15/08/2025 11:17

my point is that some statements get written off as circular reasoning when they’re really just stating a definition or a self-evident truth.

By people who don't know what circular reasoning is, maybe.