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Welcome! This is the place to ask the community of experts and other fallacyophites (I made up that word) if someone has a committed a fallacy or not. This is a great way to settle a dispute! This is also the home of the "Mastering Logical Fallacies" student support.


Dr. Bo's Criteria for Logical Fallacies:

  1. It must be an error in reasoning not a factual error.
  2. It must be commonly applied to an argument either in the form of the argument or in the interpretation of the argument.
  3. It must be deceptive in that it often fools the average adult.

Therefore, we will define a logical fallacy as a concept within argumentation that commonly leads to an error in reasoning due to the deceptive nature of its presentation. Logical fallacies can comprise fallacious arguments that contain one or more non-factual errors in their form or deceptive arguments that often lead to fallacious reasoning in their evaluation.

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S T-W

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S T-W


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#help me
Sat, Jan 19, 2019 - 04:48 PM

Fallacy? 18 should be the drinking age because it's the age of adulthood in the U.S.

Something about this strikes me as fallacious... maybe it's a false cause and effect?

"The drinking age should be lowered to 18. 18 is the age of adulthood in the United States, and adults should have the right to make their own decisions about alcohol consumption."



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Abdulazeez Alabbasi

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Abdulazeez Alabbasi


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Print Sat, Jan 19, 2019 - 11:20 PM
not a fallacy! just some argument that has to be weighed for its merits.


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Michael Chase Walker
Screenwriter, producer, mythoclast

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Michael Chase Walker

Screenwriter, producer, mythoclast

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About Michael Chase Walker

Michael Chase Walker is an actor, author, screenwriter, producer, and a former adjunct lecturer for the College of Santa Fe Moving Images Department, and Dreamworks Animation. His first motion picture was the animated classic, The Last Unicorn.
Michael was an in-house television writer for the hit television series: He-Man, She-Ra, Voltron, and V, the Series. In 1985, he was appointed Director of Children's programs for CBS Entertainment where he conceived, shaped and supervised the entire 1985 Saturday Morning line-up: Wildfire, Pee Wee's Playhouse, Galaxy High School, Teen Wolf, and over 10
Print Sat, Jan 19, 2019 - 07:10 PM
while it is definitely an argument, this is more of a valid opinion than an error in reasoning.


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Bo Bennett, PhD
Author of Logically Fallacious

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Bo Bennett, PhD

Author of Logically Fallacious

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About Bo Bennett, PhD

Bo's personal motto is "Expose an irrational belief, keep a person rational for a day. Expose irrational thinking, keep a person rational for a lifetime."  Much of his charitable work is in the area of education—not teaching people what to think, but how to think.  His projects include his book, The Concept: A Critical and Honest Look at God and Religion, and Logically Fallacious, the most comprehensive collection of logical fallacies.  Bo's personal blog is called Relationship With Reason, where he writes about several topics related to critical thinking.  His secular (humanistic) philosophy is detailed at PositiveHumanism.com.
Bo is currently the producer and host of The Humanist Hour, the official broadcast of the American Humanist Association, where he can be heard weekly discussing a variety of humanistic issued, mostly related to science, psychology, philosophy, and critical thinking.

Full bio can be found at http://www.bobennett.com
Print Sat, Jan 19, 2019 - 09:01 PM
I wouldn't say it is a fallacy; but it is not good reasoning either. "Adult" is simply a label we give to people of a arbitrary age. A rational thinker would consider the pros and cons of allowing 18-year-olds to drink legally, which includes looking at historical data, statistics, other countries and cultures, etc., then concluding that they should or should not be allowed to drink legally because of far better reasons than "we call them adults."

Conversely, one can counter "21 should be the legal age of adulthood because it's the age one is allowed to drink legally in the U.S." Now, this "neutralizes" both arguments and forces one to consider the more important factors mentioned above.
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S T-W
Monday, January 21, 2019 - 11:54:06 AM
@Bo Bennett, PhD: Thanks very much. I teach high school English, and we were discussing the merits of asking students whether this was fallacious or valid in form as a test item.

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