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Essential Logic: The Logical Fallacies

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  1. Introduction

    Essential Logic: The Logical Fallacies---Course Introduction (Preview Content)
    4 Topics
    |
    1 Quiz
  2. Lessons
    Lesson 1: Ad Hominem Abusive (Preview Content)
    4 Topics
    |
    1 Quiz
  3. Lesson 2: Ad Hominem Circumstantial (Preview Content)
    3 Topics
    |
    1 Quiz
  4. Lesson 3: Tu Quoque
    3 Topics
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    1 Quiz
  5. Lesson 4: Genetic Fallacy
    3 Topics
    |
    1 Quiz
  6. Lesson 5: Appeal to Fear (Argumentum Ad Baculum)
    3 Topics
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    1 Quiz
  7. Lesson 6: Appeal to Pity (Argumentum Ad Misericordiam)
    3 Topics
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    1 Quiz
  8. Lesson 7: Mob Appeal (Argumentum Ad Populum)
    3 Topics
    |
    1 Quiz
  9. Lesson 8: Snob Appeal
    3 Topics
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    1 Quiz
  10. Lesson 9: Appeal to Illegitimate Authority (Argumentum Ad Verecundiam)
    3 Topics
    |
    1 Quiz
  11. Lesson 10: Chronological Snobbery
    3 Topics
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    1 Quiz
  12. Lesson 11: Appeal to Ignorance
    3 Topics
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    1 Quiz
  13. Lesson 12: Irrelevant Goals and Functions
    3 Topics
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    1 Quiz
  14. Lesson 13: Irrelevant Thesis
    3 Topics
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    1 Quiz
  15. Lesson 14: Straw Man Fallacy
    3 Topics
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    1 Quiz
  16. Lesson 15: Begging the Question (Petitio Principii)
    3 Topics
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    1 Quiz
  17. Lesson 16: Bifurcation (False Dilemma)
    3 Topics
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    1 Quiz
  18. Lesson 17: Fallacy of Moderation
    3 Topics
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    1 Quiz
  19. Lesson 18: Is-Ought Fallacy
    3 Topics
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    1 Quiz
  20. Lesson 19: Fallacy of Composition
    3 Topics
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    1 Quiz
  21. Lesson 20: Fallacy of Division
    3 Topics
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    1 Quiz
  22. Lesson 21: Sweeping Generalization (Accident)
    3 Topics
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    1 Quiz
  23. Lesson 22: Hasty Generalization (Converse Accident)
    3 Topics
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    1 Quiz
  24. Lesson 23: False Analogy
    3 Topics
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    1 Quiz
  25. Lesson 24: False Cause
    3 Topics
    |
    1 Quiz
  26. Lesson 25: Fake Precision
    3 Topics
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    1 Quiz
  27. Lesson 26: Equivocation
    3 Topics
    |
    1 Quiz
  28. Lesson 27: Accent
    3 Topics
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    1 Quiz
  29. Lesson 28: Distinction without a Difference
    3 Topics
    |
    1 Quiz
  30. Lesson 29: The Frenetic Fallacy (Extra)
    1 Topic
  31. Discussions
    Discussion: Meet the Students
  32. Discussion: Four Students, Full of Fallacies
  33. End of Course Test
    End of Course Test: The Logical Fallacies
    1 Quiz
Lesson 1 of 33
In Progress

Essential Logic: The Logical Fallacies—Course Introduction (Preview Content)

Dr. Christopher Perrin introduces this course on the logical fallacies, or informal logic. He distinguishes formal from informal logic and then presents the main approaches to the course, which will involve exploring, classifying, and creating fallacies as a way to mastering them.

Outline of Session

(00:00) Dr. Perrin introduces the video series.

(00:42) Dr. Perrin clarifies the nature of informal logic. It is an “art” and deals with levels of probability and occurs in everyday speech.

(01:07) Formal logic (deductive logic) deals with syllogisms and can deliver greater levels of certainty.

(02:17) Arguments in informal logic are either strong or weak.

(02:40) “Argument” comes from the Latin word argumentum, which means to make something clear on the basis of reason or evidence.

(03:30) We should be humble and treat others with respect even as we argue with them and seek to persuade them.

(05:01) Dr. Perrin introduces the 3 main concepts of the book. Fallacies in informal logic can be summarized under the headings of: relevance, presumption, and clarity.

(05:11) The main question in any debate—What is the issue at hand? This question leads to examining whether statements are committing fallacies of relevance, presumption, or clarity.