In this video we look at using truth tables to determine whether an argument is valid or a fallacy. Four common valid forms are presented and four common invalid arguments (fallacies) are presented.
Пікірлер: 33
@dustyg4261 Жыл бұрын
This was extremely helpful; i was so stuck after listening to my college lecture. You broke it down better than my professor, so thank you
@Mudkip27014 жыл бұрын
my math book didn’t explain how to get the conclusion, but this cleared it up for me, thank you so much!
@yasminahmed34954 жыл бұрын
Agreeeee
@emmanueltuyishimire82342 жыл бұрын
I'm Rwandan and I feel hy of this video so thank you
@pratibhasingh7504 жыл бұрын
great video very helpful thank you so so much I have an exam after some days and I was very confused but because of this video my all confusion related to this topic get sorted😊
@chasitychristian96963 жыл бұрын
Thank you very much for making this video. I was stumped!!! This video just made it CLICK!!!
@happysunflower39293 жыл бұрын
This video was really helpful .Thank youuuu
@faridamohamad1019 Жыл бұрын
👏👏so useful
@SynenSimene4 жыл бұрын
You help me a lot. THANKS.
@kevinconnelly67705 жыл бұрын
Great video, very helpful.
@tristansamontina49492 жыл бұрын
How about: •Your are taking at least 12 credits or you are a part time student. •if you are taking at least 12 credits, then you are matriculated. You are not a part time student •therefore, you are matriculated. Can I ask something sir, what is the meaning of r in this topic
@csvaughen2 жыл бұрын
that's a good one, you could choose any statement in that argument to be p, q or r... suppose you choose this way: p=you are taking at least 12 credits, q=you are a part-time student, r=you are matriculated then you could write the argument in symbolic form as: p v q p ->r ~q --------- r And creating the truth table for this one would be bigger, not only because there are three premises, but because there are 3 variables, so the table has 8 rows to account for the 8 possible variations of true or false for each of the 3 variables
@asmaulhusna16805 жыл бұрын
Thank you so so so much!!!!!!
@malatmengesha83444 жыл бұрын
it is helpful video ,thank you so much!!!
@gsibuma11284 жыл бұрын
This is the argument that I need to answer: Consider the statement, “If you pass the UPCAT, I’ll buy you a car.” If you took the UPCAT and I bought you a car, can you conclude that you passed the UPCAT? That has the same form as the example 1 in the video. So the statement is not always true and it is an invalid argument. How can I answer the question tho?
@csvaughen4 жыл бұрын
Take the statement "If you pass the UPCAT, I'll buy you a car." That alone is just a statement, not an argument. I assume an argument requires at least two premises. Now you continue, "if you took the UPCAT and I bought you a car", you said "you took it" but didn't indicate passing or not. So let's say you have this argument: Premise1: If you take the UPCAT, then I'll buy you a car. Premise2: I bought you a car. based on those two premises, the conclusion "You passed the UPCAT" is not valid. You could not logically make that conclusion.
@lupitatalksalot Жыл бұрын
thank you!!!
@khreszmaerafer40353 жыл бұрын
It is a very helpful video but i'm confuse in last example. The form is not written from valid nor invalid forms. So I did a truth table and got T,T,F,F for last column. It is invalid right? Or I made a mistake?
@csvaughen3 жыл бұрын
hmm, example 8? that one's valid, the truth table should work out true in every case
@rhiannelopez798711 ай бұрын
Thank youu so much!!!
@michalchik4 жыл бұрын
This is good, but wouldn't 8 variables be 2 to the 8 or 256 instead of 8!?
@thedestroyer94234 жыл бұрын
so good
@cyberNva4 жыл бұрын
I don't understand why the first ex is invalid ??
@csvaughen4 жыл бұрын
First example is the fallacy of the converse. If p->q is true, that doesn't mean q->p is true.
@baffoeagyei15012 жыл бұрын
it is supposed to be valid not invalid so i think he can correct it
@marooqi2 жыл бұрын
I thought the and symbol is a dot. what am I thinking about?
@csvaughen2 жыл бұрын
there are multiple different notations... dot is common and makes sense, and has properties similar to multiplication en.wikipedia.org/wiki/Logical_conjunction
@АлинаКусаинова-ц1ь Жыл бұрын
hi you made a mistake in the second argument in 4th column, the third column implies to first column equals , second line F implies to T is T not F in this case argument become ivalid check everything.
@csvaughen Жыл бұрын
Hi, I checked example 2 again and it is correct, the 4th column is a conjunction, not an implication (as you suggest), so it is correct in the video, final conclusion is also correct, thanks for your feedback though
@aivepulvera7025 Жыл бұрын
hi @@csvaughen , you are right..even if I negate the q statement because of the word `not`, still the answer is valid.
@saraguerrero24323 жыл бұрын
P P>Q (P^Q)>R -S > -R Conclusión S Can someone help?
@csvaughen3 жыл бұрын
try this website web.stanford.edu/class/cs103/tools/truth-table-tool/ I just entered that argument above as a single statement in the general form (A->B) where is all of the first 4 lines you have connection with "and", B is just the variable S as to determine whether this is a valid argument. It came back as always true with this calculator (very tedious to do by hand since you have 4 variables that is 16 rows)