The construction, deconstruction and presentation of arguments for a position;

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What type of fallacy is this? Appeal to some sort of generalization?

What type of fallacy is this? [1]. John says: "People are getting shorter" [2]. Mary says: "I will classify Johns claim as an outright lie, because people have been increasing in stature in the ...
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Is “a vote for a third party is a vote for x” a valid argument?

Quite often nowadays you see things like "a vote for a third party is a vote for Trump/Hillary" (depending on what side of the political spectrum you typically fall on). I understand the argument here....
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If a claim is supported by a valid authority does the burden of proof shift?

Say person 1 believes x because a valid authority said so. Person 2 is skeptical of said claim and asks person 1 to present the evidence that supports the claim. Person 1 says he doesn't have to and ...
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Is there a term for this 'disclaimer' technique used in statements?

This is a pretty common type of statement that's seen frequently on internet posts and discussions, but I was curious if there was a term for it. The statement starts off with a disclaimer which is ...
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Why is an appeal to authority sometimes valid?

I have an idea as to why it might be valid, but I would like confirmation, rebuttals, or maybe just better answers.
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Is one commiting the “argument from authority” fallacy and/or the “consensus fallacy” when one refers to a scientific consensus when asserting truth?

Bob and Alice disagree regarding subject X. Alice holds view A regarding subject X. Bob holds view B regarding subject X. View A and view B are quite contradictory views. Both can not be true at ...
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Claiming misrepresentation as a rhetorical device

Most of us are familiar with the Straw Man fallacy, and its sister the Principle of Charity. There's a rhetorical device which runs the opposite way, though, where (e.g.) Alice may claim that ...
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How can you succeed against an excessively self-serving and defensive opponent?

Source: p 44-45, Introducing Philosophy for Canadians: A Text with Integrated Readings (2011 1 ed.) Preface: If the following is too long to read, read only 1 and 2. Question: Suppose 1 impossible. ...
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How is this Announcement NOT an explanation?

Source: With Good Reason, An Introduction to Informal Fallacies (6 ed, 2000) by Prof. S. Morris Engel PhD. [p 14:] *16. [Premise 1:] Because of recent cutbacks in our custodial staff due to ...
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How are announcements, complaints, compliments, or apologies always NOT arguments?

Source: With Good Reason, An Introduction to Informal Fallacies (6 ed, 2000) by Prof. S. Morris Engel PhD. Here, 'apology' means expression of regret, and not the Ancient Greek meanings [p 10:] As ...
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To Check or not to Check? [closed]

Samuel and Paul make a wager. They want to know if a certain professor held class the day prior when they were absent. The professor is unreachable, though, so they have to ask students from class. If ...
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What is the name of this fallacy: “You don't have an explanation for x but I do, so I'm correct and you are wrong”?

I hope this is the most correct stack exchange to ask this question. What is the name of the logical fallacy that follows: "You don't have an explanation for x but I do, so I'm correct and you are ...
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36 views

Problematic conditional argument: what is the logical form and is it valid?

I'm trying to reconstruct an argument. The argument is not about what should or shouldn't be done. As you can see the antecedent is never being picked up in the next premise. So it's just a sequence ...
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64 views

Critical Thinking Course - A Good Choice?

I'm about to retire, and I'm going back to school. I have the opportunity to take an introductory Critical Thinking course, and I think that it will be a little dry, but I'm wondering if it could ...
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43 views

Assistance in interpreting this excerpt concerning political philosophy

The article comes from "The Rhetorical Functions of Slogans: Classifications and Characteristics" by Robert E. Denton. The title should give away what the entire article is about. I've come to the ...
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Does this philosophical argument about accidents and universal origin contain valid logical structure?

I'm not enough of a philosopher to properly analyze this particular argument, but I'm curious about it and I'd like to see it dissected and explained. "If the solar system was brought about by an ...
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Is this a fallacy: no argument against X, therefore X?

Recently I was talking to a friend of mine, a vegan. Here's what she said: "I was talking to a vegan philosopher once, and he said that he is a vegan because there is no good argument against veganism"...
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If “All S is P” is true, does it contradict “No non-S is non-P”?

I have a problem I encountered in a logic textbook that I cannot figure out after multiple tries. Say we assume that "All S is P" is true. Does this allow us to conclude the truth value of "No Non-S ...
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What to do when encountering a logical fallacy?

If I were in an argument, and my opponent was to use perhaps ad hominem and I caught it and pointed it out, what purpose does it serve? May I dismiss his/her argument or can I only acknowledge it as ...
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Repeatedly asking for definitions of common terms. Is this a fallacy?

Let's say that you provide the definition of a term to someone, and that person asks you to then define terms within that definition. When you do that, then this person asks you to keep defining other ...
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40 views

Law of Contrapositives?

The Law of Contrapositives states that if a conditional statement is true, then it's contrapositive will also be true. I can easily see this works through example conditional statements, but why does ...
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44 views

What is the name of the following fallacy?

"You are worried about what person Y is saying. Therefore, Y is saying the truth." Context: A person X argues that Y is wrong about his view (let's suppose that X used arguments to support his ...
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If one is coerced into believing something that is actually true, have they truly been deceived?

Here, coercion is taken to be the method of persuasion which encompasses all logical fallacies; lying, lying by omission, or embellishment; emotional and otherwise logically unsound arguments; and ...
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Argument Validity

The haze in Singapore causes problems for the capitalist economic system. The forest fires in Indonesia cause the haze in Singapore. The forest fires in Indonesia are caused by the greed inherent in ...
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How do I counter this argument (and truth-table help)?

I will pass the exam or I will not pass the exam. If I will pass the exam, then I will pass the exam even if I don't study. If I will pass the exam even if I don't study, then studying is ...
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Have any philosophers argued that ad hominems are sometimes valid?

As far as I can tell, the position that ad hominem attacks are always invalid seems to be widespread within the philosophical community. I'm not entirely convinced that this is a reasonable position, ...
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Who was the first to argue that consciousness exists?

I have seen the following argument in several places: Consciousness cannot be an illusion, and it surely exists. An illusion is perceiving something to be true when this something is not ...
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What fallacy dismisses a conclusion because supporters give invalid arguments for it?

A person dismisses an otherwise valid argument, because some of its proponents support it for the wrong reason. How is this fallacy called? EDIT: Here is an example. A person defends the idea that ...
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Can you teach something you don't know? [closed]

Is it possible to teach something you don't know?
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How do I counter this argument? [closed]

Essentially I was in an argument with a pro black/#BlackLivesMatter proponent, and they asserted that the USA is out to get black people, and that white's are constantly killing blacks. I countered ...
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How to address hard to verify claims?

Is it ok to dismiss claims like "If you research it, you will see that X is true" or "If you read this you will see that X is true" or "If you wanted to learn you would read this material and agree ...
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Is it legitimate to win a moral debate with logic?

Is it legitimate to win a moral, political or ethical argument by using logical methods? If you demonstrate that an opponent's statements are somehow illogical, the reason the opponent is ...
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What makes the “lazy arguments” (you have no chance, so don't bother) 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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Is this argument, with roots in virtue ethics, valid?

According to virtue ethics, one should always strive to do as a "virtuous person" would do in the same situation. If a patient wishes to continue treatment, even though the doctor deems the ...
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Is it ethically correct for a physician to refuse a course of treatment demanded by the patient?

I'm writing about the medical ethical dilemma of whether or not to give life-sustaining therapy if it is judged to be futile by the doctor anyhow. I'm to write a logically valid argument FOR or ...
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Is the use of inconsistent definitions a logical fallacy?

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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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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Is “group X is responsible for the action (or inaction) of politician Y because they are the majority of voters” a fallacious argument?

I have read this very useful answer which suggests that the moral responsibility of an individual voter for the actions of a politician they voted for, is limited. However, the comments on that ...
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How to rate philosophy essays?

I might end up teaching philosophy in Finnish lukio/gymnasium. I will not get an opportunity to practice teaching it - I do get to practice teaching mathematics a fair deal, though. (The situation is ...
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INUS conditions for invalid arguments [closed]

Is it a necessary and sufficient condition that invalid arguments have a false conclusion?
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Why do people who subscribe to self-refuting philosophies still argue with others?

The belief that everything is relative is obviously self-refuting, because it holds to an absolute. However, in my experience, people who believe this (or some form of it) such as some Buddhists and ...
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Is there a flaw in Spinoza's argument about gender inequality?

Spinoza, the 17th century philosopher wrote in his Political Treatise (Chapter XI): "If by nature women were equal to men, and were equally distinguished by force of character and ability, in ...
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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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What kind of an argument is this? [closed]

A is probable because of B. B is probable because of C. C is true, therefore A is probable. What type of argument or inference is this?
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“That religion is not a race doesn't stop people who attack it from being racist!” Is this 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 religion is ...
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explain valid or invalid [duplicate]

Suppose that the conclusion of a particular argument is ‘Grass is green and it is not the case that grass is green.’ Without knowing anything more about this argument – in particular, without knowing ...
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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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Is “only A are B” the same as “all B are A”?

I have two syllogisms which I think are pretty similar. Correct me if I am wrong but I believe "Only A are B" is the same as "All B are A". Only A are B (Can be rewritten as "All B are A") Only B are ...
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How do you argue without evidence?

Let's say you come to some sort of debate and you forgot to do your fact checking. What sorts methods could you use to argue a major point, e.g. gun control, without specific facts? I'm thinking ...
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Do justifiable arguments presuppose the explanations of their terms?

An explanation is simply that which allows for the object's intelligibility, which could in turn be claimed to be necessary in any justified argument about such an object(s). For example, the premise '...