Square of Opposition (Part 1): Contrary

This video lecture discusses the one of the important topics in the Square of Opposition, that is, contrary.

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Thanks!

PHILO-notes Team

[rhinahime-sama]

Thanks to you, I was able to understand my logic lesson this week. 🙇‍♀️❤️❤️

[alelgnyigrem]

1. Explain the basic characteristics of critical thinkers and the barriers to critical
thinking (4 pts.)
2. Write the four components of categorical proposition and explain their functions
in logical arguments (4 pts.).
3. Identify the standard- forms of categorical proposition and label each form
whether they are universal or particular based on quantity and negative or
affirmative based on quality (4 pts.).
4. Discuss the difference and similarities of modern and traditional squares of
opposition (4 pts).
5. Write the Conversion, Obversion and Contraposition of the following
propositions (4 pts.).
a. All mammals are creatures that have hair
b. No Muslims are Christians

[nikhilnikki]

Thank u so much it is very helpful
Explanation is in simple way of complex topic. Great work

[regginsouth]

What is the subcontrary of universal affirmative?

[francisarengh]

Very informative and understandable couse.

[tewahedootube]

How does contrary differ in quality??
Do u mean quantity(in number--all & no)

[alelgnyigrem]

4. Discuss the difference and similarities of modern and traditional squares of
opposition ?

[bobgraham]

Does the square of Opposition have any real world application? It seems to me that it is stating the obvious so I can't tell why it is taught - but presumably there is a reason to teach it that I am not aware of?


As far as I can tell, the square of opposition is about as useful as teaching people a Biology class that everyone alive will some day die. Yes it is true, but how would such a fact be of any use to a biology student? How is the square of opposition useful to a philosophy student?

[reighannemargaretr.bautist]

What if both premises are, for example, universal affirmative, under which square of opposition does it fall under?

[vincentparpan]

thanks for saving my ass, because im so fucked up in logic