Logical Arguments - Modus Ponens & Modus Tollens
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- čas přidán 19. 08. 2024
- Modus Ponens and Modus Tollens are two logical argument forms. In either case, these have two premises and a conclusion. These argument forms are called valid, which means that if you accept the hypotheses, then it is valid to conclude the conclusion. This is distinct from having a sound argument which means not only is the structure logically valid, but additionally the premises are true. In this video we will learn how to analyze a written argument by its logical structure, as well as write out the truth table for Modus Ponens and Modus Tollens.
Modus Ponens:
if p, then q
p
Therefore, q
Modus Tollens:
If p, then q
Not q,
Therefore, Not p.
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Or you shouldn’t be lazy and actually engage the text
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This man is good,but couldn't get the actual concept so I intended to search for other CZcams videos about Modus ponens and Modus Tollens. Until I found a channel named "the wisdom annex", which helped me a lot.
I teach this and you just raised the bar for learning resources with an awesome video! I'm sharing the link to this with my argument mapping students when we discuss defeasible modus ponens schemes. Awesome!
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Thanks.
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I like how you showed us where the variables are in the sentence
I'm a brazilian student of I.T. and I wasn't understanding that. Thank you for your video.
Pensava que eu era o unico Br 😅
Thank you I was so lost with this concept you made it so much easier to understand!!
You're very welcome!
Conjunction /\ = TRUE only when both components are true
Disjunction \/ = FALSE only when both components are false
Conditional --> FALSE only when antecedent is TRUE and consequent is False
Bi-Conditional TRUE only when both antecedent and consequent have the same truth value
~p = IS NOT
/\ = AND
\/ = OR
UNKPCRIDE Thank you. Been looking for these all over the internet but I’m stupid. Might just pass this exam now lmao.
Thank you so much
Why does he have p=f and q=f resulting in a p->q=T premise? I thought "Disjunction \/ = FALSE only when both components are false". Should not the premise for the above example be p->q=F?
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Glad you think so!
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good explaination
0:56 / 8:43
Logical Arguments - Modus Ponens & Modus Tollens
you are amazing
crazy how this fit with logical programming LOL
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Thank man. Great explanation.
Hypothetical syllogisms are tricky. Truth tables test my patience.
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Glad it helped!
I felt cheered with all this. Modua pollens is probably the Aristotle logic ?
Damn, getting heavy around 1:50 haha
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Really helped me.
Can you show the truth table of Modus tollens
Hi, this video is very helpful. I have a question sir, what if the form of argument is like this
If p, then q.
~p
Therefore, ~q
Hoping for your answer, sir! Have a good day!
You used modus toluns argument to explain modus toluns to us 😅
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that laugh at 1:54
*so if p→q is that : if truth is truth then it's true, and if Ffalse is Ttruth then is Ttrue, and if Ttruth is Ffalse then its Ffalse*
6:28 Modus Tollens
Clear.
Is there another argument form which states
“if p then q”
not p
therefore, not q?”
I am so confused because my teacher doesn't call it by these names and it is really throwing me off.
What about probability?
If I do not study, I will fail, THEREFORE I MUST STUDY.
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Check out the description for all the vids. Shortcut: czcams.com/play/PLHXZ9OQGMqxersk8fUxiUMSIx0DBqsKZS.html
If my bladder is full I feel like peeing, then I need to pee. I feel like peeing, my bladder must be full, so I go pee.