7.5 Conditional Proof

With some technical difficulties, Professor Thorsby explains how to proof a deductive argument using the conditional proof method.

[coco]

Literally would've failed without you. Thank you!

[Baddycass]

Studying for my final and this just unlocked my brain and helped me out so much!!!

[TheOnTopPod]

Your videos literally saved my academic career!

[richieb]

Thanks for these videos. There literally saving my grade.

[melvinsanchez]

Thank you for making these videos. I have been providing them to students. They are very helpful.

[moviesbooksandphilosophy]

You saved me. You deserve a beer sir👍 Respect from India.

[rschultz]

Could you teach 7.7 Lesson on page 440. My final is covering it and I'm only passing because of these videos. You are truly a God Send!!

[QuotidianPerfection]

Hi Mark Thorsby, I really enjoyed watching you work out the conditional proofs, indirect proofs, and regular natural deductions on paper! By the way, your pen in the indirect proofs video is awesome--where did you get it? Take care, QP

[sarahdamato]

really enjoying this, though i would like it if you could but down the number of sentences we'll use meaning like were going to be using 7 reasons this proof and then right them down like 1, 2, 3, 4, 5, 6, 7 instead of waiting till the end because i would like to try the sequence myself and i cant do it without the line number

[ExceedinglyShaby]

Thank you professor, by the way, I like the old fashion pen and paper easier to understand. (I am never able to read the computer version)

[francescopiazza]

That's a weird trick, what a lesson!

[feynmannjunior]

The first example in the video can be proven by using de Morgan, distribution and hypothetical syllogism but of course, it is much easier by using the conditional proof method.

[eduardbrown]

Hello, Congratulation for the channel! Can you help me with one exercise about this subject?

[Nidomy]

Can we, after discharging, remake an assumption with the same proposition and go to another conclusion?

[nathanielsmith]

My school is finally getting with the 21st century and getting rid of this course as a requirement for a law degree. It's a bunch of useless, archaic puzzles.