concerns logical fallacies, which are errors in the logic or reasoning of an argument that result in a misconception or presumption

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How to counter argument from silence?

When I argue with someone whether something is true, I often have to counter an argument like "If that were true, somebody would have proven it.". The premise of the other side is that there are ...
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34 views

A logical fallacy? [on hold]

Just recently my friend and I were discussing marriage statistics, and I jokingly told him that how every woman that I've met so far was either married or engaged. In response, he said something like, ...
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31 views

Is there a logical fallacy in “dropping down” to a different level of abstraction?

Is there a logical fallacy for differing abstractive levels. As in, you start talking on the level of demographics until someone counters with verifiable data on the same level of abstraction, at ...
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1answer
26 views

Is there a name for the fallacy of “hypocrisy of a group”?

I feel like there has to be just because I see it so often. The statement is usually phrased as a question: "Why does group X believe thing Y but also contradictory thing Z?"—the mistake being that ...
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2answers
48 views

What makes lazy arguments “valid” or “invalid”?

What I am thinking of is not exactly like the Lazy argument described in Wikipedia. I am thinking of a general argument where a normative conclusion towards inaction is drawn from the knowledge of the ...
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53 views

What is the formal name for the desert island fallacy?

In my regular discussions with people, as people run out of logical approaches to an argument, I frequently come across the argument: ...but if you were stuck on a desert island, would you... ...
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13 views

Why cannot the Fallacy of Composition be combined with from Hasty Generalisation, and Division with Accident?

Abbreviate the Fallacy of: Hasty Generalization to HG, Composition to CMP, Division to DVN, and Accident to ACT. Source: A Concise Introduction to Logic (12 Ed, 2014) by Patrick Hurley [p 172:] ...
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62 views

Since ad hominem arguments affect credibility, how are they still fallacious?

Abbreviate Argumentum ad Hominem to AAH. For consistency, I use 'credibility' to mean both believability and credibility. Source: p 133, A Concise Introduction to Logic (12 Ed, 2014) by Patrick Hurley ...
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Why is there no fallacy, if an Argumentum ad Hominem attacks someone who is not arguing?

Abbreviate Argumentum ad Hominem to AAH and ad Hominem Abusive to AAHA. Source: p 132, A Concise Introduction to Logic (12 Ed, 2014) by Patrick Hurley Keep in mind that the purpose of an ad ...
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43 views

'Cars have almost disappeared. So this car has almost.' : Why 'Division' and not 'Accident'?

Source: p 174, A Concise Introduction to Logic (12 Ed, 2014) by Patrick Hurley Abbreviate the Fallacy of Accident to FA and the Fallacy of Division to FD. Just as composition can sometimes be ...
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1answer
25 views

'Less fuel is consumed by cars than by fire trucks' : Why 'Composition' and not 'Hasty Generalisation'?

Source: p 172, A Concise Introduction to Logic (12 Ed, 2014) by Patrick Hurley Abbreviate the Fallacy of Composition to FC and the Fallacy of Hasty Generalization to FHG. To distinguish ...
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If the Bible contains circular reasoning, does it discredit it?

If the Bible contains circular reasoning, does it discredit it? One of the reasons why I wonder about this is because in most academic/professional fields circular reasoning would discredit the ...
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1answer
63 views

Is deriving natural rights from nature a logical fallacy?

According to the view of natural rights, rights are derived from nature (a la John Locke), and these rights are possessed by all humans by virtue of being human. To provide an example based on my ...
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1answer
43 views

How to successfully defend an exception without committing special pleading?

In this question: Does the impossibility of an infinite regress prove God exists? The argument is claiming that the reason X is an exception to Y's rule, is that Y is impossible, as is. The only way ...
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5answers
85 views

Is there a named fallacy associated with arguments that include a logically inconsistent definition?

I am not asking for a defense of or pro/con of the existence of an omnipotent (or multiple omni-x) being, or for the existence of square-circles or any other similar thing. These arguments are well ...
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3answers
36 views

What is the logical fallacy if persons A says X and person B changes the subject?

Person A provides a fact/opinion X. Person B retaliates by saying that there are more important things to talk about other than the fact/opinion X. Example: The Person A is a prominent politician who ...
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3answers
46 views

Is there a named fallacy for the argument that a proposition is “believable by comparison”?

Consider an argument where a completely absurd story is presented, and then it is "debunked", and replaced with a more reasonable story. The reasonable story gains credence because it expressly ...
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58 views

How is a complex question different to a leading question?

Source: pp 152-153, A Concise Introduction to Logic (12 Ed, 2014) by Patrick J. Hurley [p 152:] The fallacy of complex question is committed when two (or more) questions are asked in the guise ...
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1answer
30 views

What fallacy is “sports use it so it must be a good system”? [duplicate]

So basically the argument goes, "auto-promotion/relegation is an inherently flawed system because of x reasons." and the response is "well traditional sports have used it for decades thus it's ...
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5answers
94 views

How does 'distorting an argument' differ from 'changing the subject'?

Source: pp 137-138, A Concise Introduction to Logic (12 Ed, 2014) by Patrick J. Hurley The red herring fallacy can be confused with the straw man fallacy because both have the effect of drawing ...
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3answers
44 views

How is 'Argumentum Ad Hominem Abusive' fallacious?

Source: p 131, A Concise Introduction to Logic (12 Ed, 2014) by Patrick J. Hurley The argument against the person occurs in three forms: the ad hominem abusive, the ad hominem circumstantial, ...
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1answer
51 views

Is Appeal to Pity really an Argument from Compassion?

Sorry for the long quote, but please advise how I should abridge it; feel free to emend this post. Source: p 127, A Concise Introduction to Logic (12 Ed, 2014) by Patrick J. Hurley The appeal to ...
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102 views

What is the name of the fallacy characterized by “All A are B; therefore all B are A”?

What is the name of this fallacy? I can't seem to find any reference to it on the 'net. It may seem too simple to be a common fallacy, but I don't find that to be the case. For instance, Hume (it ...
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36 views

What is the term for twisting an argument so that it can be defeated?

Suppose Person One disagrees with Person Two's argument on a topic. Person One may be using sound logic in their argument, but in an effort to discredit Person Two, Person One first starts by quoting ...
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Is there a self-undermining fallacy?

Consider a proposition stating something to be true that by the very act of stating denies truth to the speaker. For example, Alice states that Bob is smart. But, it is common knowledge that Bob is ...
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Is it a fallacy to say that a sane person cannot apply rational thought to the motivations of the insane?

A common argument in today's news is that: Someone commits a heinous crime by shooting a bunch of people. Anyone who commits a heinous crime must be insane. Sane people cannot apply rational thought ...
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119 views

Is it fallacious to argue “you can't say X because you lack authority”?

So I understand an Argument from Authority, or ad verecundiam, fallacy is where someone uses a persons/their authority to reason their argument without other sound evidence. But what in a situation ...
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What is the fallacy in “If A, then B; not B; therefore not A”?

Because we have never had complaints about our food, our food must not be bad. The restaurant owners always deny that the food is the reason customers are not returning and they justify that the ...
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48 views

What is the name of the logical fallacy (because I have interacted or used something I must know everything about it)?

In the article Why We Shouldn't Fear Artificial Intelligence, the author writes:"A common fallacy suggests that, because AI are hosted on computers, they’ll be good at manipulating them. But let me ...
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1answer
52 views

To neglect the percentage of people expected to have the disease: Is this a Base Rate Fallacy? [closed]

Would this be an example of the base rate fallacy in medicine? When people commit the “base rate fallacy” in medical diagnoses, they neglect the percentage of people who are expected to have the ...
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1answer
62 views

Does this argument represent a logical fallacy?

Does this argument represent a logical fallacy? If so, which one? Jack: People who argue against [religion] are racist. Jill: But, [religion] is not a race! Jack: Well, that doesn't stop ...
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“I am not aware that my food came from fields worked on by slaves. Thus, I am not liable for the moral implications of slavery.” [closed]

"I am not aware that my food came from fields worked on by slaves. Thus, I am not liable for the moral implications of slavery." How can this viewpoint be refuted? If possible, please name specific ...
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1answer
32 views

What is the problem with extrapolating a rate change to its limit? [closed]

A recent investigation into universities in Northville reveals that the percentage of philosophy prefessors who are female was 11.2486102% in 2012, 10.9399783% in 2013 and 10.6400161% in 2014. This is ...
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3answers
47 views

Defend against objection by showing opponent's position has same defect?

This has been bugging me...what is it called when you defend argument X by admitting that X has alleged problem P, but noting that competing arguments Y and Z also have P? For example, A asserts ...
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182 views

Does the “No True Scotsman” fallacy need the assertion to be changed? [closed]

Or is it still a NTS fallacy if, instead of the original assertion being modified, it already contains provisions for rejecting falsifications as incorrectly run experiments? If "true Scotsman" is in ...
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9answers
684 views

How can numbers be infinite? [closed]

Abstract or not, the number concept originates from the world, so it seems to me there are only as many numbers as things, and there comes a point where what we call numbers are only hollow ...
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4answers
136 views

Is this circular reasoning?

A is probable because of B, C, and D D is probable because of E, F and A Initially it looks like it is circular reasoning, however in the first statement D is not required for A to be probable, B ...
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The Most Fundamental Fallacy [duplicate]

There are dozens of different types of fallacies: formal fallacies, informal fallacies, faulty generalizations, red herring fallacies, and so on... But is there one simple, singular condition that ...
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108 views

Why must informal fallacies be detected by humans instead of machines?

Why do informal fallacies have to be detected by humans according to my textbook? It claims that Artificial Intelligence of any kind is unable to do this on its own.
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Identify the fallacy: “I used to think this as well, but now I've seen the light”

Claiming that the fact that one used to hold the idea of the opponent to bolster one's own argument. Example: I used to believe in your idea of X and would have argued your side supporting X until I ...
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37 views

Is this a form of fallacy of avoiding answering the question? [closed]

Ok, I am dating a girl and I am feeling that she wants to borrow my moeny. Here is the conversation: She did not ask me to give her money directly. But she said I: so, when do you think we can ...
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60 views

Because A is true, so B must also be true

What is the technical term for the logical fallacy which can be stated: "A is true, so B must also be true" when A and B are unrelated (i.e. A does not imply B). A very crude example could be ...
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1answer
34 views

Is it still equivocation when a listener willfully misinterprets a speaker's words?

I know that equivocation is using the same term in an ambiguous way, but does it only count if it all comes from the same person? If so, what would you call this? Speaker A: "Please stop. I'm ...
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1answer
85 views

What is the clear differnces distinguish between the four fallacies: missing the point, begging the question, suppressed evidence, false cause?

What is the clear differnces distinguish between the four fallacies: missing the point, begging the question, suppressed evidence, false cause? And please give example to clarify the difference? They ...
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42 views

Particulars in a conditional syllogism

I have the following syllogism: Should all goods come from virtue, no evil man possesses the good. Some evil men possess the good. Therefore, some goods do not come from virtue. I understand that ...
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Identify the fallacy: X has red hair. Females have red hair. Therefore, X is female

Person A has trait X, therefore person A is group Y. Therefore, anyone with trait X is group Y. What I'm trying to show is that Person A has red hair. Females have red hair. Therefore, ...
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54 views

Is an appeal from authority that's irrelevant to the point a fallacy of the same name?

If an appeal to authority is irrelevant to the point made (whether or not they are actually a valid authority) and used as dismissal, does that make it a fallacy of appeal from authority, or should it ...
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30 views

Fallacy about experimenting human made things with not enough conditions [closed]

I know 3 or 4 people who believed: You don't need to click "remove" before removing a USB stick. And that will not damage the USB stick. You should plug in the USB stick again after copying files to ...
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221 views

Name of a fallacy excluding an outgroup from discussing an ingroup's issue?

I see this a lot on the internet, especially as of late with what's trending in the news: You're a man, so you're not allowed to comment on women's issues. You're a woman, so you're not ...
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110 views

Fallacy of slight but impressive results at high but hidden cost [closed]

What's the name of the logical fallacy all lotteries are based on? People choose a gamble, where they are at disadvantage, downplaying or outright ignoring the cost blinded by desirability of the ...