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The relativist fallacy, also known as the subjectivist fallacy, is claiming that something is true for one person but not true for someone else, when in fact that thing is an objective fact. The fallacy rests on the law of noncontradiction. The fallacy applies only to objective facts, or what are alleged to be objective facts, rather than to facts about personal tastes or subjective experiences, and only to facts regarded in the same sense and at the same time.
A false dilemma, also referred to as false dichotomy or false binary, is an informal fallacy based on a premise that erroneously limits what options are available. The source of the fallacy lies not in an invalid form of inference but in a false premise. This premise has the form of a disjunctive claim: it asserts that one among a number of alternatives must be true. This disjunction is problematic because it oversimplifies the choice by excluding viable alternatives, presenting the viewer with only two absolute choices when, in fact, there could be many.
A straw man fallacy is the informal fallacy of refuting an argument different from the one actually under discussion, while not recognizing or acknowledging the distinction. One who engages in this fallacy is said to be "attacking a straw man".
In classical rhetoric and logic, begging the question or assuming the conclusion is an informal fallacy that occurs when an argument's premises assume the truth of the conclusion. Historically, begging the question refers to a fault in a dialectical argument in which the speaker assumes some premise that has not been demonstrated to be true. In modern usage, it has come to refer to an argument in which the premises assume the conclusion without supporting it. This makes it an example of circular reasoning.
A fallacy is the use of invalid or otherwise faulty reasoning in the construction of an argument that may appear to be well-reasoned if unnoticed. The term was introduced in the Western intellectual tradition by the Aristotelian De Sophisticis Elenchis.
Deductive reasoning is the process of drawing valid inferences. An inference is valid if its conclusion follows logically from its premises, meaning that it is impossible for the premises to be true and the conclusion to be false. For example, the inference from the premises "all men are mortal" and "Socrates is a man" to the conclusion "Socrates is mortal" is deductively valid. An argument is sound if it is valid and all its premises are true. One approach defines deduction in terms of the intentions of the author: they have to intend for the premises to offer deductive support to the conclusion. With the help of this modification, it is possible to distinguish valid from invalid deductive reasoning: it is invalid if the author's belief about the deductive support is false, but even invalid deductive reasoning is a form of deductive reasoning.
The genetic fallacy is a fallacy of irrelevance in which arguments or information are dismissed or validated based solely on their source of origin rather than their content. In other words, a claim is ignored or given credibility based on its source rather than the claim itself.
Argument to moderation —also known as the false compromise, argument from middle ground, fallacy of gray, middle ground fallacy, or golden mean fallacy—is the fallacy that the truth is always in the middle of two opposites.
A faulty generalization is an informal fallacy wherein a conclusion is drawn about all or many instances of a phenomenon on the basis of one or a few instances of that phenomenon. It is similar to a proof by example in mathematics. It is an example of jumping to conclusions. For example, one may generalize about all people or all members of a group from what one knows about just one or a few people:
Logical reasoning is a mental activity that aims to arrive at a conclusion in a rigorous way. It happens in the form of inferences or arguments by starting from a set of premises and reasoning to a conclusion supported by these premises. The premises and the conclusion are propositions, i.e. true or false claims about what is the case. Together, they form an argument. Logical reasoning is norm-governed in the sense that it aims to formulate correct arguments that any rational person would find convincing. The main discipline studying logical reasoning is logic.
Informal fallacies are a type of incorrect argument in natural language. The source of the error is not just due to the form of the argument, as is the case for formal fallacies, but can also be due to their content and context. Fallacies, despite being incorrect, usually appear to be correct and thereby can seduce people into accepting and using them. These misleading appearances are often connected to various aspects of natural language, such as ambiguous or vague expressions, or the assumption of implicit premises instead of making them explicit.
Attacking Faulty Reasoning: A Practical Guide to Fallacy-free Arguments is a textbook on logical fallacies by T. Edward Damer that has been used for many years in a number of college courses on logic, critical thinking, argumentation, and philosophy. It explains 60 of the most commonly committed fallacies. Each of the fallacies is concisely defined and illustrated with several relevant examples. For each fallacy, the text gives suggestions about how to address or to "attack" the fallacy when it is encountered. The organization of the fallacies comes from the author’s own fallacy theory, which defines a fallacy as a violation of one of the five criteria of a good argument:
In logic and philosophy, a formal fallacy is a pattern of reasoning rendered invalid by a flaw in its logical structure that can neatly be expressed in a standard logic system, for example propositional logic. It is defined as a deductive argument that is invalid. The argument itself could have true premises, but still have a false conclusion. Thus, a formal fallacy is a fallacy in which deduction goes wrong, and is no longer a logical process. This may not affect the truth of the conclusion, since validity and truth are separate in formal logic.
Logic is the formal science of using reason and is considered a branch of both philosophy and mathematics and to a lesser extent computer science. Logic investigates and classifies the structure of statements and arguments, both through the study of formal systems of inference and the study of arguments in natural language. The scope of logic can therefore be very large, ranging from core topics such as the study of fallacies and paradoxes, to specialized analyses of reasoning such as probability, correct reasoning, and arguments involving causality. One of the aims of logic is to identify the correct and incorrect inferences. Logicians study the criteria for the evaluation of arguments.
Appeal to the stone, also known as argumentum ad lapidem, is a logical fallacy that dismisses an argument as untrue or absurd. The dismissal is made by stating or reiterating that the argument is absurd, without providing further argumentation. This theory is closely tied to proof by assertion due to the lack of evidence behind the statement and its attempt to persuade without providing any evidence.
Bulverism is a type of ad hominem rhetorical fallacy that combines circular reasoning and the genetic fallacy with presumption or condescension. The Bulverist assumes a speaker's argument is invalid or false and then explains why the speaker came to make that mistake or to be so silly by attacking the speaker or the speaker's motive.
In argumentation theory, an argumentum ad populum is a fallacious argument which is based on claiming a truth or affirming something is good or correct because many people think so.
Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the study of deductively valid inferences or logical truths. It examines how conclusions follow from premises based on the structure of arguments alone, independent of their topic and content. Informal logic is associated with informal fallacies, critical thinking, and argumentation theory. Informal logic examines arguments expressed in natural language whereas formal logic uses formal language. When used as a countable noun, the term "a logic" refers to a specific logical formal system that articulates a proof system. Logic plays a central role in many fields, such as philosophy, mathematics, computer science, and linguistics.
References
- ↑ "special pleading". English Oxford Living Dictionaries. Oxford University Press. Archived from the original on May 23, 2019. Retrieved 23 May 2019.
Argument in which the speaker deliberately ignores aspects that are unfavourable to their point of view.
- ↑ Damer, T. Edward (2008). Attacking Faulty Reasoning: A Practical Guide to Fallacy-free Arguments (6 ed.). Cengage Learning. pp. 122–124. ISBN 978-0-495-09506-4.
- ↑ Engel, S. Morris (1994), Fallacies and Pitfalls of Language: The Language Trap, Courier Dover Publications, p. 102, ISBN 978-0-486-28274-9
- ↑ Wheeler, Dr. L. Kip. "Logical Fallacies Handlist". Carson-Newman University (Study Guide). Room 309 in the English Department suite of Henderson 311. Archived from the original on 6 June 2023. Retrieved 23 May 2019.
Special Pleading, in which the writer creates a universal principle, then insists that principle does not for some reason apply to the issue at hand.
{{cite web}}: CS1 maint: location (link) - 1 2 Dowden, Bradley. "Special Pleading". Internet Encyclopedia of Philosophy. California State University, Sacramento. Retrieved 23 May 2019.
[A] form of inconsistency in which the reasoner doesn't apply [their] principles consistently…[T]he fallacy of applying a general principle to various situations but not applying it to a special situation that interests the arguer even though the general principle properly applies to that special situation, too.
- ↑ LaMorte, Wayne W. "Fallacious Reasoning and Propaganda Techniques". Persuasive Messages. Boston University School of Public Health. Retrieved 23 May 2019.
Special Pleading: committed by applying a double standard exemplified in choice of words.
- ↑ Slick, Matt (18 May 2008). "Logical fallacies or fallacies in argumentation". Christian Apologetics and Research Ministry. Retrieved 23 May 2019.
Special Pleading (double standard) - Applying a standard to another that is different from a standard applied to oneself.
- ↑ This division of fallacy categories is found in introductory texts such as Fallacy: The Counterfeit of Argument, W. Ward Fearnside, Prentice-Hall, Inc., 1959. OCLC 710677
- ↑ "Special Pleading". Bruce Thompson's Fallacy Page. Palomar College: Critical Thinking (PHIL 200) [study guide]. Retrieved 23 May 2019.
The argument defends a position by claiming that the opponent lacks the necessary perspective (experiences or credentials) to appreciate the position (or the arguments in support of it). This lack allegedly makes the opponent unqualified to critique the position... [t]his extreme version of Special Pleading is a tactic often used to argue that no action can be judged morally wrong, since no one has the perspective to be able to judge another person's moral code... [e.g.] 'My opponent can't know what's best for our fair community. He wasn't born and raised here, like I was.'
- ↑ "Special Pleading". Bruce Thompson's Fallacy Page. Palomar College: Critical Thinking (PHIL 200) [study guide]. Retrieved 23 May 2019.
'You aren't like me, so you do not even have a right to think about or hold opinions on my plight'... [t]he fallacy of Special Pleading presupposes that some differences are so great that the human capacity of empathy cannot cross them.
- ↑ Fischer, D. H. (1970), Historians' Fallacies: Toward A Logic of Historical Thought, Harper torchbooks (first ed.), New York: HarperCollins, pp. 110–113, ISBN 978-0-06-131545-9, OCLC 185446787
