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Entries Tagged as 'Fallacy Friday'

Fallacy Friday: The Fallacy of False Cause & Post Hoc, Ergo Propter Hoc

March 11th, 2011 6 Comments

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This week I will look at the fallacy of false cause and in particular the post hoc, ergo propter hoc fallacy. These fallacies occur when one conflates the fact that two things occur at the same time or in close succession with the conclusion that one caused the other. Post Hoc, Ergo Propter Hoc This […]

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Fallacy Friday: Division and Composition

March 5th, 2011 15 Comments

Today I want to look at two fallacies, the fallacy of composition and the fallacy of division. These two fallacies are related in that they both mistakenly confuse what is true of the parts with what is true of the whole. The Fallacy of Composition The fallacy of composition involves mistakenly reasoning that what is […]

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Fallacy Friday: Tu Quoque (But you did it too!)

February 25th, 2011 25 Comments

Last week I looked at the Straw Man Fallacy, today I want to explore the tu quoque fallacy. In latin tu quoque (too kwo-kwee) means “you too”;  in fact, the phrase “you did it too” is a good, succinct account of this fallacy. A tu quoque occurs when one rebuts a particular criticism of one’s own position by […]

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Fallacy Friday: The Straw Man

February 19th, 2011 16 Comments

In my last Fallacy Friday I covered the The Genetic Fallacy, the error of arguing that an idea is false on the basis of where it originated from. Today I want to look at what’s known as the “straw man” fallacy. Origins of the Name This fallacy takes its name from a practice common in the […]

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Fallacy Friday: The Genetic Fallacy

February 11th, 2011 16 Comments

A fallacy related to the one we looked at last week (the Ad Hominem fallacy) is the genetic fallacy. One commits the genetic fallacy if one argues that a proposition is false on the basis of where the idea originated from.  Like the ad hominem, this fallacy invokes a kind of psychological transference where one transfers one’s […]

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Fallacy Friday: The Ubiquitous Ad Hominem

February 5th, 2011 37 Comments

In my previous posts, What is an Argument? and Assessing Arguments, I spelt out some basics as to what an argument is and how to assess arguments. There I noted that a sound argument is one where the premises of the argument is true and the argument is valid. It is impossible for an argument which […]

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Fallacy Friday: Assessing Arguments

January 28th, 2011 9 Comments

In last week’s post, Fallacy Friday: What is an Argument?, we established that an argument is a set of reasons (or premises) offered in support of a conclusion. We noted that arguments always have  two components: premises and conclusions. We also observed that premises sometimes can be implicit or unstated. Of course knowing what an argument […]

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