Many are familiar with deductive arguments (where the conclusion necessarily follows from the premises) and inductive arguments (where the conclusion follows from the premises with a varying degree of probability and strength). But how well acquainted is one with “seductive”(40) arguments?
“Seductive” arguments are another name for informal fallacies, the subject S. Morris Engel takes up in his excellent book entitled With Good Reason: An Introduction to Informal Fallacies. In addition to the great content one will find in each chapter, the book is full of exercises (with an answer key at the end of each chapter for selected questions), diagrams, cartoons, and examples to help illustrate and reinforce the various points being made throughout the book on fallacies.
The book is divided into two parts: “Logic and Language” and “Informal Fallacies.”
Showing posts with label fallacies. Show all posts
Showing posts with label fallacies. Show all posts
Saturday, November 05, 2011
Book Review: With Good Reason: An Introduction to Informal Fallacies by S. Morris Engel
Topics:
Book Reviews
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fallacies
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logic
Friday, June 03, 2011
Fallacy Friday: Affirming the Consequent
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
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Today's episode:
Affirming the Consequent (text | MP3)
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Today's episode:
Affirming the Consequent (text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, May 27, 2011
Fallacy Friday: Denying the Antecedent
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
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Today's episode:
Denying the Antecedent (text | MP3)
Enjoy.
• RSS Feed, or Via iTunes, or one-click.
Today's episode:
Denying the Antecedent (text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, May 20, 2011
Fallacy Friday: Equivocation
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
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Today's episode: Equivocation (text | MP3)
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Today's episode: Equivocation (text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, May 13, 2011
Fallacy Friday: Ad Ignorantiam (Arguments from Ignorance)
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
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Today's episode: Ad Ignorantiam
(Arguments from Ignorance) (text | MP3)
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Today's episode: Ad Ignorantiam
(Arguments from Ignorance) (text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, May 06, 2011
Fallacy Friday: Ad Populum (Appeals to Popularity)
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
• RSS Feed, or Via iTunes, or one-click.
Today's episode: Ad Populum
(Appeals to Popularity) (text | MP3)
Enjoy.
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Today's episode: Ad Populum
(Appeals to Popularity) (text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, April 29, 2011
Fallacy Friday: Ad Misericordiam (Appeal to Pity)
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
• RSS Feed, or Via iTunes, or one-click.
Today's episode: Ad Misericordiam (Appeal to Pity)
(text | MP3)
Enjoy.
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Today's episode: Ad Misericordiam (Appeal to Pity)
(text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, April 22, 2011
Fallacy Friday: Petitio Principii (Begging the Question)
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
• RSS Feed, or Via iTunes, or one-click.
Today's episode: Petitio Principii (Begging the Question) (text | MP3)
Enjoy.
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Today's episode: Petitio Principii (Begging the Question) (text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, April 15, 2011
Fallacy Friday: False Cause & Post Hoc, Ergo Propter Hoc
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
• RSS Feed, or Via iTunes, or one-click.
Today's episode: False Cause & Post Hoc, Ergo Propter Hoc (text | MP3)
Enjoy.
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Today's episode: False Cause & Post Hoc, Ergo Propter Hoc (text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, April 08, 2011
Fallacy Friday: Division and Composition
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
• RSS Feed, or Via iTunes, or one-click.
Today's episode: Division and Composition
(text | MP3)
Enjoy.
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Today's episode: Division and Composition
(text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, April 01, 2011
Fallacy Friday: Tu Quoque (But you did it too!)
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
• RSS Feed, or Via iTunes, or one-click.
Today's episode: Tu Quoque (But you did it too!) (text | MP3)
Enjoy.
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Today's episode: Tu Quoque (But you did it too!) (text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, March 25, 2011
Fallacy Friday: The Straw Man
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
• RSS Feed, or Via iTunes, or one-click.
Today's episode: The Straw Man (text | MP3)
Enjoy.
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Today's episode: The Straw Man (text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, March 18, 2011
Fallacy Friday: The Genetic Fallacy
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
• RSS Feed, or Via iTunes, or one-click.
Today's episode: The Genetic Fallacy (text | MP3)
Enjoy.
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Today's episode: The Genetic Fallacy (text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, March 11, 2011
Fallacy Friday: Ad Hominem
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
• RSS Feed, or Via iTunes, or one-click.
Today's episode: The Ad Hominem (text | MP3)
Enjoy.
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Today's episode: The Ad Hominem (text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, March 04, 2011
Fallacy Friday: Assessing Arguments
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Apologetics315 is producing the audio version, released every Friday as well. Subscribe using:
• RSS Feed, or Via iTunes, or one-click.
Today's episode: Assessing Arguments (text | MP3)
Enjoy.
• RSS Feed, or Via iTunes, or one-click.
Today's episode: Assessing Arguments (text | MP3)
Enjoy.
Topics:
fallacies
,
logic
,
Matthew Flannagan
Friday, February 25, 2011
New Podcast: Fallacy Friday by Matthew Flannagan
The Fallacy Friday Podcast is the weekly audio version of Matthew Flannagan's Fallacy Friday posts over at the MandM blog. Matt has has occasionally been asked by para-church, church and home-schooling groups to put together a critical thinking or “mini logic” course, with a focus on fallacy spotting, and teach it to their youth. He has found the demand to be quite high from youth and adults alike, so he has decided to do a short piece on this every Friday on MandM entitled “Fallacy Friday.”
Apologetics315 will be producing the audio version, released every Friday as well. Subscribe using:
• RSS Feed, or
• Via iTunes, or
• one-click to your feed-reader
To navigate the series in print, use the Fallacy Friday tag over at MandM.org.nz. Check out the introduction to the series (text | MP3), and the first episode: What is an Argument? (text | MP3)
Be sure to visit and subscribe to MandM blog. Hear an interview with Matt Flannagan.
Enjoy.
Apologetics315 will be producing the audio version, released every Friday as well. Subscribe using:
• RSS Feed, or
• Via iTunes, or
• one-click to your feed-reader
To navigate the series in print, use the Fallacy Friday tag over at MandM.org.nz. Check out the introduction to the series (text | MP3), and the first episode: What is an Argument? (text | MP3)
Be sure to visit and subscribe to MandM blog. Hear an interview with Matt Flannagan.
Enjoy.
Topics:
fallacies
,
Featured Podcast
,
logic
,
Matthew Flannagan
Thursday, July 02, 2009
Logical Fallacies Podcast - 2nd Edition
In May Apologetics 315 featured a Logic Primer, composed of five brief introductory lessons in logic. Lesson 5 covered logical fallacies and included a fallacies podcast based upon Stephen's Guide to the fallacies.Now, we present a second logical fallacies podcast based upon the 42 Fallacies at the Nizkor site; original content by Dr. Michael C. Labossiere. This treatment of the fallacies is more thorough and much clearer. More episodes will be added regularly.
You can subscribe directly in iTunes here, or get the RSS feed here.
Enjoy.
Topics:
audio
,
critical thinking
,
fallacies
,
Featured Podcast
,
logic
,
mp3
,
podcasts
Friday, May 29, 2009
Logic Primer 5: Logical Fallacies
Today we will look at logical fallacies. A fallacy is simply an error in thinking. Certain errors are so common they have been classified and named. These are the sorts of fallacies we are dealing with here.There are two primary categories of fallacies: formal and informal. Formal fallacies have to do with the logical structure of an argument. If the logical structure is incorrect, then the argument has committed a fallacy. Informal fallacies have to do with errors of thinking that happen apart from the structure of an argument. These could include such things as appeals to emotions, personal character attacks, and ambiguous language.
When it comes to informal logic, the tendency for the beginner is to gravitate immediately to the fallacies. Immediate benefit can be gained by understanding where thinking may have gone wrong. However, the student of logic is encouraged to be careful not to label every apparent fallacy they can find. This is not only in many cases impolite, it is not very productive. Recognizing fallacies is only the first step. But bringing proper thinking and clarity to an issue can be the real challange. Every case has its own particular elements, so more information is always helpful to determine the strengths and weaknesses of arguments.
Ideally, when a fallacy is recognized it can be corrected without a sort of "gotcha" attitude. The principle of charity and a gracious manner are essential in seeking common understanding, rather than simply becoming a fallacy-finder.
Because the fallacies cover such a broad range, they are beyond the scope of one post. In addition, many excellent resources can be found on the web for studying the fallacies. Although many good resources are found in print, good audio resources are few. That is why we have provided here an audio podcast adaptation of Stephen's Guide to Logical Fallacies, one of the well-known fallacy sites on the web. Permission has been granted by logician Stephen Downes. The purpose of the podcast is to introduce and summarize the fallacies and provide examples and solutions to the errors.
You can find the Apologetics 315's Logical Fallacies podcast on iTunes here. Or use the RSS feed found here. The Logical Fallacies 2nd Edition podcast can be found here.
Stephen's Guide to Logical Fallacies is found here, with a nice mirror-site with additional content added by Christian philosopher J.P. Moreland at the Illogic Primer here.
The Nizkor Project 42 Fallacies is here.
Audio by Michael Ramsden on Logic and Fallacies can be found here.
Helpful Books:
- Nonsense by Robert Gula
- Informal Logic by Douglas Walton
Enjoy.
Topics:
critical thinking
,
fallacies
,
logic
Saturday, May 16, 2009
Book Review: Nonsense: A Handbook of Logical Fallacies by Robert Gula
Nonsense: A Handbook of Logical Fallacies by Robert Gula is a wonderful book which is both loaded with high quality content and easy to read. Falling into the categories of logic, critical thinking, and communication, this book is very useful to cutting to the core of the issue at hand and finding truth.This is a book about logical (informal) fallacies. The idea is that by learning the common errors of thinking, one is in a better position to identify them and avoid the same errors. The author would point out that no one is immune to nonsense; we all make errors in thinking. The task here is to learn to avoid the pitfalls. Gula shows us the areas that arguments can go wrong:
When an argument is unsuccessful, it has probably gone wrong in one of the following areas: 1) The evidence has not been thorough; contradictory evidence has been overlooked or ignored; 2) The evidence has not been accurate; false or unsubstantiated or misleading statements have been claimed as fact; 3) The conclusion has not clearly and uncontrovertibly come form the evidence; the relationship between evidence and conclusion has not been a firm one.1The most common categories of informal fallacies are those of irrelevance, confusion, and oversimplification. The author spends time focusing on each one of these categories, splitting them into smaller subcategories as he goes along. Within this book he lists some 170 fallacies (not an official list), with many falling into multiple categories.
What makes this book fun to read is that for every fallacy described the reader can instantly recognize the fallacy from personal experience (TV advertising, sales pitches, politics, etc.) One may find this book extremely helpful in sifting through the chaff of TV advertising and a large amount of popular sales tactics. At the same time, the reader may cringe when confronted with the fact that he too has often been guilty of the very fallacy. Perhaps most importantly, one’s own thinking is being corrected.
Some of the subcategories that Gula offers are the following: emotional language, propaganda, suggestion, irrelevance, diversion, ambiguity, incorrect inference, oversimplification, evasion, and a handful more. The writing is clear, simple, and very informative. The majority of the book deals with the fallacies, while later chapters focus on arguments, syllogisms and semantics.
Chapter 14, “More on Arguments,” is a notable chapter. Gula presents a number of helpful questions to ask yourself when getting into an argument: “…when you find yourself in an argument, the first question you should ask yourself is ‘Why am I arguing?’ and you should try to ascertain the motivation of your opponent.”2 He offers a number of reasons why people argue, and a list of many more questions to ask yourself about how you want the argument to end. The point is to determine not only why your opponent is arguing, but what your own motivations are; is it really the topic of the argument that you care about? Gula provides an excellent outline of questions you should address in order to clarify just what the argument is about and where the point of the disagreement actually lies.
The author’s goal is clearly to cut through the bad thinking, emotional and imprecise language, and to get to the point of the discussion. “To argue effectively requires skill, patience, delicacy, tact, diplomacy, sensitivity; it asks us to put aside our personalities and to address the issues; it requires us to be methodical, objective, analytic, and, above all, clear.”3
Although this is a book dealing with arguments, the author’s spirit and motivation is clearly not argumentative. Nonsense: A Handbook of Logical Fallacies is highly recommended for its readability, practicality, and high quality content.
1. Robert J. Gula, Nonsense: A Handbook of Logical Fallacies (Mount Jackson, VA: Axios Press, 2002), p. 32.
2. Ibid., p. 122.
3. Ibid., p. 128.
Topics:
Book Reviews
,
critical thinking
,
fallacies
,
logic
,
reason
Friday, March 20, 2009
42 Logical Fallacies
You'll find many web sites that list logical fallacies. Here is one of them. Good content that is simply written with a basic layout. Also recommended is Nonsense: A Handbook of Logical Fallacies by Robert J. Gula.Check out 42 Logical Fallacies.
Enjoy.
Topics:
books
,
fallacies
,
Featured Website
,
logic

