Reasoning and Fallacies Flashcards
Referring to fallacies in which the error in reasoning is brought about by the occurrence of ambiguous terms whose meanings are confused in an argument
Fallacies of Ambiguity
It is committed when several meanings of a word or phrase become confused in the context of one argument
Fallacy of Equivocation
It is committed when one reason from the qualities of the parts of a whole to the qualities of the whole itself
Fallacy of Composition
It is committed which is the reverse of composition, is committed when one reason from the qualities of a whole to the qualities of the parts of the whole
Fallacy of Division
Referring to fallacies in which the error in reasoning is brought about by the irrelevance of the premise or premises to the conclusion of an argument
Fallacies of Relevance
It is committed when it is argued that a proposition is true simply on the basis that it has not been proven false, or that is false because it has not been proven true. This is a fallacy because our ignorance of how to prove or disprove a proposition does not necessarily establish either its truth or falsehood.
Argumentum Ad Ignorantiam
Committed when one appeals to an authority whose field of expertise does not include the nature of conclusion being established
Argumentum Ad Verecundiam
Committed when one evaluates an argument by means of citing something about the person who asserts said argument. In this case, an argument is often claimed to be wrong because of some negative qualities of the person who asserted an argument
Argumentum Ad Hominem
Committed when one appeals to pity to cause the acceptance of a conclusion
Argumentum Ad Misericordiam
Committed when one appeals to general, common, popular, or stereotypical prejudices or beliefs to cause acceptance of some conclusion
Argumentum Ad Antiquitatem
Committed when one appeals to force, often with subtlety, to cause the acceptance of a conclusion
Argumentum Ad Baculum
Referring to fallacies in which the error in reasoning is brought about by the occurrence of complex or loaded expressions whose assumptions are questionable or have not yet been proven to be true
Fallacies of Presumption
Committed when one asks a question that contains unproved assumptions. A fallacy is committed when one argues that these assumptions are true just because the answer is given to the complex question
The Fallacy of Complex Question
Committed when one attributes wrong cause to something, which is often due to a mere temporal succession of two events
The Fallacy of False Cause
Committed when reasoning is circular in which the conclusion is already assumed in the premises
The Fallacy of Petitio Principii
Committed when one applies a general rule to individual cases, which, because of their special or accidental nature, the general rule does not properly apply
The Fallacy of Accident
Committed when one makes a generalization from a special or accidental case, or simply from insufficient number of cases
The Fallacy of Dicto Simpliciter
This process enables us to justify or prove the truth of a statement or belief on the basis of the truth of another statement or belief
Reasoning
An end result of reasoning or inference. Since it concern truth, it can only consist of statements
Argument
Provides a justification for the conclusion
Premise
What follows from or is proven by the premise
Conclusion
It is necessary, meaning, we are sure about its truth for there is no possibility that it is false
Certain
It is only likely to be true for there is a possibility that it is false
Probable
The truth of the premises is intended to prove that the truth of the conclusion is certain. It is consequently either valid or invalid
Deductive argument
A deductive argument that is valid and that contains premises that are all true
Sound deductive argument
Deductive argument that is valid and that contains at least one premise that is false
Unsound deductive argument
The truth of the premises is intended to prove that the truth of the conclusion is highly probable. It is consequently either strong or weak
Inductive argument
Errors and the cases of weak inductive reasoning
Fallacies
Also known as converse accident, is the most typical case of fallacy. It occurs when we make a general conclusion from an insufficient number of cases
Hasty generalization
Committed when we conclude that two things must have a certain similarity because they already have other similarities but which are either insufficient in number or irrelevant to the conclusion
Weak analogy
A strong inductive argument in which all premise are true
Cogent
A strong inductive argument in which at least one premise is false
Uncogent
Errors in reasoning due solely to an incorrect form or structure of an argument. They thus, correspond to the invalid deductive arguments
Formal fallacies
Also known as material fallacies, are errors in reasoning due to solely to an anomaly or defect in the content of an argument. They are usually psychological persuasive and that is why there are the ones commonly committed
Informal fallacies