In my last Friday Fallacy post, I looked at the fallacy of denying the antecedent. There I discussed conditional statements, statements of the form “if P then Q”. Examples would be statements such as “if it is raining then the grass will be wet” or “if the US had not shot Bin Laden then he would still […]
Entries Tagged as 'Fallacy Friday'
Friday Fallacy: Affirming the Consequent
May 13th, 2011 1 Comment
Tags: Affirming the Consequent · Bin Laden · Fallacy Friday
Friday Fallacy: Equivocation
April 16th, 2011 14 Comments
In my post on Assessing Arguments I noted that a valid argument is one where it is impossible for the premises to be true and the conclusion false. I gave the following example: Premise: All men are under 10 feet tall; Premise: John is a man; Conclusion: John is under 10 feet tall. This argument […]
Tags: Equivocation Fallacy · Fallacy Friday · Luke Muehlhauser · Walter Sinnott-Armstrong · Wes Morriston · William Wainwright
Fallacy Friday: Petitio Principii (Begging the Question)
March 19th, 2011 7 Comments
For the last few Fridays I have been publishing a blog series on logical fallacies. This begs the question, what fallacy will I discuss today? The above sentence illustrates how the phrase “begs the question” is commonly misused. To test how pervasive this misuse is I typed “this begs the question” into Google and limited it […]
Tags: Begging the Question · Circular Reasoning · Fallacy Friday · Petitio Principii