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Back to Think Again IV: How to Avoid Fallacies

Learner Reviews & Feedback for Think Again IV: How to Avoid Fallacies by Duke University

4.7
stars
435 ratings

About the Course

We encounter fallacies almost everywhere we look. Politicians, salespeople, and children commonly use fallacies in order to get you to think whatever they want you to think. It’s important to learn to recognize fallacies so that you can avoid being fooled by them. It’s also important to learn about fallacies so that you avoid making fallacious arguments yourself. This course will show you how to identify and avoid many of the fallacies that lead people astray. In this course, you will learn about fallacies. Fallacies are arguments that suffer from one or more common but avoidable defects: equivocation, circularity, vagueness, etc. It’s important to learn about fallacies so that you can recognize them when you see them, and not be fooled by them. It’s also important to learn about fallacies so that you avoid making fallacious arguments yourself. Suggested Readings Students who want more detailed explanations or additional exercises or who want to explore these topics in more depth should consult Understanding Arguments: An Introduction to Informal Logic, Ninth Edition, Concise, Chapters 13-17, by Walter Sinnott-Armstrong and Robert Fogelin. Course Format Each week will be divided into multiple video segments that can be viewed separately or in groups. There will be short ungraded quizzes after each segment (to check comprehension) and a longer graded quiz at the end of the course....

Top reviews

DH

Aug 28, 2016

Useful information for anyone who talks or writes.

PR

Feb 14, 2026

This course helped me better understand logical fallacies and improved my ability to analyze arguments more critically and think more clearly before accepting conclusions.

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51 - 75 of 94 Reviews for Think Again IV: How to Avoid Fallacies

By CECILIA A P

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Nov 30, 2025

Bastante completo.

By Sharma s s

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Nov 22, 2017

Interesting Course

By CARLOS A J M

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Jul 31, 2024

excelente curso

By VICTOR S G C

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Apr 17, 2026

muy buen curso

By John W

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Jun 19, 2023

Best course!!!

By IRVING M R O

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Apr 5, 2023

UN GRAN CURSO

By José A A I

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Nov 16, 2018

Great course!

By Diego A P M

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Dec 10, 2020

excelente!!

By matthew s

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Mar 4, 2018

Excellent !

By Rasper F

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Dec 1, 2022

Brilliant.

By Cleutom R

•

Jun 29, 2019

Muito bom!

By ENRIQUE I P

•

Aug 18, 2025

EXCELENTE

By JESUS S L M

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Aug 15, 2024

Todo bien

By TANIA V M R

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Aug 4, 2024

excelente

By TANIA A R A

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Dec 5, 2022

excelente

By Abhishek s

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May 27, 2020

very good

By YAZMIN P R

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Nov 20, 2025

Me gusto

By SAI A K

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Oct 27, 2025

amazing

By Жаксылыкова К Е

•

Oct 28, 2024

great

By JUAN F F M

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Jun 28, 2023

GOOD

By Waleed M S

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Sep 2, 2016

best

By Gustavo A O C

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Oct 7, 2024

sad

By MARLENT G R

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Jul 31, 2024

.

By GERARDO D B M

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Jul 31, 2023

,

By Kohei

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Apr 24, 2020

I deepened my understanding of arguments by studying Think Again IV.

While Think Again I~III focused on good arguments, this course taught bad arguments. We learned how to criticize an argument by recognizing fallacies and refutation. The professor not only presented good examples of bad arguments, but also explained when we can encounter those bad arguments, which I enjoyed. Partially because my native language is not English, I had some challenges on the semantic and syntactic ambiguity.

Overall, I learned a lot about arguments by completing the entire series. I would like to thank the professors for creating this course!