4.6 Venn Diagrams and the Traditional Standpoint

Professor Thorsby explains how to use Venn Diagrams using the Aristotelian assumption of the existntial fallacy to test immediate inference statements.

[stephly]

omg i was having such a hard time understanding this and you just made it so clear to me !!! wow thank you !!!

[mateowhite]

Ijust wanted to say thank you for helping me, I got 50/50 on my exam

[cherishthisnest]

Hello Mr. Thorsby, I am a logic student and my professor doesnt really know how to teach so I often watch your videos and I love them. Thank you
I recently got a question on my test that looked like this:
First use Venn Diagrams from the Boolean standpoint to determine whether the following argument is valid or invalid. It it is invalid, test it again from the Aristotelian statndpoint. If the form is valid, consider whether the argument is either conditionally valid or it it commits the existential fallacy. Then select which of the following options best describes the argument.

All students who fail the next exam are unlucky. Therefore, it is false that some lucky people are not non-students who fail the next exam.

Could you explain the steps please or make a video on it.
Thank you

[KateJCruz]

Thank you! This is extremely helpful!

[tptptp]

Hi noticed you are not wearing glasses? visual acuity.

[francescopiazza]

The existencial question seems to arise from the fact that we don't kwow if can P or S can be empty.