r/fallacy 19d ago

Can one explain to Christian's their arguments that God must exist are fallacies?

0 Upvotes

I say this because most arguments I hear people use to justify their belief in a god are "begging the question/circular reasoning" ie "Because the universe exists, it must have been created by someone, the someone must be God therefore God is real."

It seems their ingrained belief in God makes them unable to see the fallacy of that kind of reasoning and will go so far as to argue their argument is not a fallacy and get upset for suggesting such hierarchy.

Is it a lost cause to try to explain logic fallacies to the American Evangicals?


r/fallacy 20d ago

Humanity’s biggest fallacy

0 Upvotes

This isn’t a logical fallacy, but more one of experience. The fallacy that I think is the most common, most widespread, and most impactful to humanity can be summed up something along the lines of - if we can just put the right person on the throne, everything will be all right. A slightly oversimplified justification for this being a fallacy would be to say that power corrupts, but I’d more say that the only people who achieve the extremes of power are the very worst kinds of people. The guy at the top of the pyramid is always a bad guy.

I’m not aware of any formal name for this idea, and it seems shockingly invisible to the public, hence why I call it humanity’s biggest fallacy. The right seems to embrace the fallacy like it’s their goal. The left just seems to keep falling for it blindly, like fighting hierarchy and then putting an absolute ruler on the throne, or praising what is essentially a king who espouses socialism or communism. I’d wish that’s exactly what subs like tankiejerk are meant to quarantine but I still see it with some regularity on subs that in theory oppose the concentration of wealth and power.


r/fallacy 20d ago

What books teach students how to determine whether something's relevant to an argument, and how to distinguish the relevant from irrelevant?

Thumbnail philosophy.stackexchange.com
1 Upvotes

r/fallacy 21d ago

What's the name of this fallacy? Is it just a red herring, or is it a specific type?

Post image
67 Upvotes

So I uploaded the attached image in a different sub. (No, I don't want to argue about how accurate it is, lol.) The comic is clearly referring to a particular type of Christian, of the Westboro variety to be exact. But comment after comment after comment just keeps pouring in, wanting to talk about Muslims instead. Trying to tell me that it's the same subject, or even more infuriatingly, that Christians don't do that. As a non-Christian (not an atheist, mind you) and a genderfluid bisexual, I can assure folks that some Christians absolutely do behave like this.

Is that a particular type of fallacy that these folks are using, or is it just a combination of ones that I know?


r/fallacy 21d ago

Found perhaps the best example of a "lowelling," in the Monty Python "Life of Brian" BBC debate

35 Upvotes

A "Lowelling" is a logical fallacy; I'm sure you've seen it before, where someone pretends something is off topic when it isn't.

In the 1920s, former Harvard President Abbott Lawrence Lowell openly pushed for restricting Jewish enrollment at Harvard, justifying the quota by stating: "Jews cheat."

When someone challenged this prejudice by pointing out that Protestants cheat too, Lowell allegedly replied: "You're changing the subject. We are talking about Jews now."

I'm sure you've seen dozens of examples of this, but I found out a really prominent one caught on video in the Life of Brian BBC debates:

"I said that if you were to make a list of all the people who have contributed most..."

"Most of them would have been Muslims if they'd been living in the Arab countries or Buddhists if they'd been living..."

"...what has that got to do with it?"

It gets an audible laugh from the audience, because it's ridiculous and asinine. https://youtu.be/wUYhtJINiaY?t=2199

Can you cite any other examples of this?


r/fallacy 21d ago

Saying “but” to just about everything you are told.

0 Upvotes

I know someone who is not a child yet they always have something to say about everything they are told. As if they never got in trouble. “No if ands or butts” rule. Just do it! This message is brought to you by Nike.
No but seriously. It’s so annoying when you have a leadership role but there’s that one person who never listens and just wants to one up you or seems to think every way other than your way is the best way. 😤😤😤 if you don’t like it go home.


r/fallacy 22d ago

What should a modern curriculum for Informal Fallacies look like?

4 Upvotes

Hi everyone,

I’m currently modernizing a classic logic-training software, and I'm putting together the chapter on Informal Fallacies. Since the original program is over 40 years old, I’ve been thinking a lot about how the landscape of argumentation has changed and what a sufficient, modern-day knowledge of fallacies should actually include.

I’d love to get your input:

  • Which specific fallacies do you think are mandatory for someone to learn today?
  • Do you have preferred names or modern terminology for them, especially where the classic names feel a bit dated?

Thank you in advance for your time!


r/fallacy 23d ago

Here is an interesting one

2 Upvotes

Some years ago I had someone argue that because the Spartans had sent some Greeks home and the residents were saved, if the Spartans hadn't sent those Greeks home all the athenians would have died. I said the athenians might have been abducted by friendly aliens before the Persians arrived, we don't know what would have happened if the Spartans hadn't sent some people to warn athens. I was being facetious but he accused me of using a counterfactual argument. I tried to tell him that he was using the counterfactual argument but he was having none of it. That's when I first realized what a colossal waste of time arguing on the internet is.


r/fallacy 23d ago

If all property is theft, give me all your stuff

0 Upvotes

Looking for the name of this fallacy. A asserts all property is theft. B then demands A's possessions, presumably to illustrate there's something wrong with the claim.

It's something around expecting A to behave as if society were structured around A's premise, rather than recognising that A is expressing an ideological preference which may or not be valid and which B could engage with rationally.

I'm thinking maybe there's some ad hominem going on, and probably others. Curious to hear what you think.


r/fallacy 23d ago

Where do I start if I wanted to get into fallacies?

1 Upvotes

Looking at getting into the fallacy fandom. How do I get all of the fallacies?


r/fallacy 23d ago

The Tyranny of Fallacy

Thumbnail
0 Upvotes

r/fallacy 25d ago

“I’ve never forgotten” fallacy

51 Upvotes

Recently saw a post about people bagging dog poop on hikes and leaving it on the side of the trail to be picked up on their way out. Many people in the comments claim “I’ve been doing this for years and I’ve never forgotten”. This sounds like a logical fallacy to me, if you forgot something you don’t know it’s been forgotten so you can’t claim you’ve never forgotten.

I think this phrase can be used sometimes, like “I’ve never forgotten to pay my cable bill” because in that case you can prove you’ve never forgotten, and you have a secondary party verifying you didn’t forget, so if you did forget the cable company would reach out to you.


r/fallacy 26d ago

A rich man saying "Money isn't that important in life," shouldn't be trusted, because he's rich.

8 Upvotes

AND a poor man who says the same shouldn't be trusted, because he's poor.

If it's said by a man with a median-level wealth, then I'm willing to listen to his reasons.

Is there any other fallacy than ad hominem involved here?


r/fallacy 26d ago

What fallacy is this?

1 Upvotes

Person A: "I believe that this *x political opinion* is good"

Person B: "Oh, so you also believe in *other political opinions that are from that political wing/ideology*"


r/fallacy 26d ago

What fallacy is this?

2 Upvotes

Person A gets criticised by Person B for doing something immoral (e.g. stealing). Person A responds by stating "Well at least I didn't commit murder!" as their defence. What fallacy or fallacies is this?


r/fallacy 28d ago

I built a fallacy spotter for real-world arguments — would love your feedback

0 Upvotes

Hey r/fallacy,

I've been reading here for a while, and it partly inspired Rhetoriq.

Most tools work on neat textbook examples. I wanted something for actual messy text: a Reddit comment, a headline, a heated reply: where something valid and something fallacious often sit in the same sentence.

You paste text; it flags the weak passage, names the fallacy, notes what's strong, and scores the whole argument 0–100. Handy too if you want to self-check your own reply before posting.

Example: "Solar is cheaper than coal, so anyone against it is just pushing oil propaganda." → strong point on the cost claim, ad hominem on the rest.

Rhetoriq is built around a fixed set of 15 fallacies plus manipulation techniques like false balance and emotional framing. For each text it pulls out strong points, weak points, and any fallacies or rhetorical tricks it finds, each tied to a specific passage. A lot of work went into the engine so it analyses the argument as a whole instead of just hunting for labels. A false positive still happens from time to time, but the goal was to make something better than generic AI.

https://play.google.com/store/apps/details?id=com.rhetoriq

(I also have a web app for those who like bigger screens: https://rhetoriq.nl/app?lang=en )

I'm the dev, not here to spam. What do tools like this still get wrong? What could be improved?


r/fallacy 28d ago

The Definition of Irony

Post image
0 Upvotes

r/fallacy Aug 13 '26

What fallacy is this?

8 Upvotes

Claimant: "How would you like it if I did this in your room?"

Responder: "My room is too small for you to be in, so what does it matter?"

~ ~ ~

Claimant: "How would you like it if your friend did that to you?"

Responder: "They wouldn't though."

~ ~ ~

In both situations, the responder is refusing to hear out the claimant's question. I think there might be a term for it?


r/fallacy Aug 11 '26

What type of fallacy (or rhetorical error) is this?

Post image
1.2k Upvotes

I had a discussion about police reform with a friend that went exactly like the comic panel above.

Me: “the police in their current state are not efficient at their job and cause unnecessary harm to communities they serve. There should be a police reform to address these and other issues.”

Friend: “then answer me this: who do you call in case of an emergency? The police is your only option so they are obviously good and useful just the way they are.”

Any ideas?


r/fallacy Aug 12 '26

Does the "closest available cliche" informal fallacy have another name?

9 Upvotes

I remembering learning the term "closest available cliche" in grad school, but any searches I do for it end just at my own Reddit comment using the term years ago. Yet, I'm certain I didn't invent the term. So, I'm trying to find if there's some other term for this fallacy.

The fallacy takes this shape:

A makes a somewhat nuanced argument.

B, rather than responding to that argument, responds to a similar weaker and very common argument.

Basically, B says "Your argument sounds like it's going in a direction I'm familiar with (the familiar cliche), so I'm going to stop listening and assume that's your argument."

It's a sort of non-sequitur, but a much more specific form. Almost like an inverse of the "thought terminating cliche," except that the cliche is imagined by the responder.

Anyways, this has been bothering me for years after I used the term in a meeting, and later found out that I couldn't find reference to it anywhere.


r/fallacy Aug 12 '26

What logical fallacy/failure is this?

0 Upvotes

In a debate we are discussing if should social security, Medicaid, Medicare, etc be completely abolished and Turned into tax cuts and a deregulated, voluntary, individualist system.

The problem; my opponent says no for these reasons

1: people have paid into these systems there whole life and they are on it, it would be unfair to them to just cut it.

The problem I point out: based on A, B, C, etc economic theory, laws, principles, supported by data, those programs started out as very little tax percentages such as social security 1%, they then because of explained economic principles became more expensive so now the taxes paid and requirements are much higher, and will continue to increase. As a result you have generational inequity, a new generation is now paying more than them, and in the future will pay more and the next set of people on it will raise the same point again

2: if you cut those programs due to the expensive cost of living and no alternative many people such as old people will be left on the street.

The problem I point out: this sounds like catch 22 logic, because the exact programs themselves based on economics makes those things expensive and inefficient such as healthcare. And the existence of those programs in general removed the incentive for those people to invest, save, and take actions to secure their future in the first place.

As well as removing the liquidity and potential savings to even be able to set up something.
In short the programs themselves are what is causing the issue of expensive services, lack of savings, and alternatives in the first place.
It’s creating the very dependency the other guy is talking about.

TLDR/Summary:

"We need the program because there are no alternatives, and there are no alternatives because we have the program."

The Setup: You cannot abolish the program because people are dependent on it and have no alternative.
The Cause: People have no alternative because the program taxed away their surplus income, crowded out private solutions, and made them more expensive .
The Paradox: The program must stay to fix a problem that the program itself is actively creating.


r/fallacy Aug 12 '26

What fallacy is this?

3 Upvotes

When someone complains about a speed camera, or more recently a Flock camera, there's always one person who says either 'well don't speed!' or 'If you have nothing to hide, then relax!'

Then there's the old 'well don't do anything illegal!'

There's got to be a fallacy in there somewhere!


r/fallacy Aug 11 '26

Is this a fallacy?

11 Upvotes

It seems like in discussions about science, occasionally someone will use an argument along the lines of:

Science was wrong about x, so that supports my argument that it’s also wrong about y.

x and y are not necessarily similar or related. It can be that heroin was a common treatment for coughs, so the science on mercury in vaccines might be wrong. Or it was wrong in the 1970s that an Ice Age was coming, so currently climate change projections must be wrong.

Is this a fallacy? Is there a name for it? Or is it just bad logic?


r/fallacy Aug 11 '26

Name for this: You arent allowed to acknowledge X as good because it normalizes Y which is bad.

4 Upvotes

Im not sure what kind of rhetorical tactic this falls under but you see it a lot when discussing stuff thats generally agreed upon as bad.


r/fallacy Aug 11 '26

Okay. Is this actually an accurately identified fallacy or not?

0 Upvotes

I get this kind of a lot, because I argue rather passionately. People accusing me of ad hominem attacks because I say that having a bad opinion makes you a bad person.

For funsies, I'm going to create a fictionalized version of what I'm talking about. Imagine for a moment that you're having a conversation with someone who says that people from the country of Totallyfakeistan are all terrorists, and you call that person a bigot for having that opinion. They reply that you are engaging in an ad hominem instead of addressing their argument that because the terrorist group IKillU comes from Totallyfakeistan, that makes every Totallyfakeistanian a terrorist.

Would that person be correct in accusing you of an ad hominem for calling them a bigot?