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Back to Think Again II: How to Reason Deductively

Learner Reviews & Feedback for Think Again II: How to Reason Deductively by Duke University

4.3
stars
411 ratings

About the Course

Deductive arguments are supposed to be valid in the sense that the premises guarantee that the conclusion is true. In this course, you will learn how to use truth-tables and Venn diagrams to represent the information contained in the premises and conclusion of an argument so that you can determine whether or not the argument is deductively valid. 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 6 and 7 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

DL

Jan 24, 2017

Would've liked more on the truth table of the conditional.

MR

Feb 28, 2025

Extremely entertaining and captivating. I was unfamiliar with logic as a science, but now I enjoy its complexity. Love the teachers!

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76 - 79 of 79 Reviews for Think Again II: How to Reason Deductively

By Alexandre R

Oct 12, 2023

Não perca seu tempo com esse curso. Ele é desnecessariamente extenso, desvia para outros assuntos totalmente alheios ao tema. O exercício final, além de também desnecessariamente extenso, extremamente maçante e cansativo, é impossível de ser atingida a nota mínima, pois as simbologias dos enunciados são extremamente confusas, de maneira que apenas decifrar o que cada enunciado está solicitando já é um trabalho hercúleo. São 30 questões, cada uma com um enunciado mais confuso que a outra e que se alteram a cada tentativa, de modo que você não consegue nem reaproveitar o que já havia acertado. Enfim, é um curso extremamente chato, entediante, que poderia custar 10% do tempo que custa se fosse objetivo e que, a não ser por muita sorte, de tão mal elaboradas que são as questões. Um curso feito para você desistir. Abandonei.

By martha n

Jun 8, 2025

it was extremely hard to follow, the exercises did not relate to the course directly, the examples were bad

By RAMYA R

Nov 23, 2025

Too complicated and super tough to crack, especially for science students like me. Disappinted!

By farzaneh h

Oct 24, 2023

The first course was way better:(