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@BrieV Premises aren't valid or invalid; arguments are. The question is whether the premise is true. In this example, 'Garfield is a cat' is treated as true and because all cats are mammals, the conclusion follows validly!
@SarahShaver Yes, your argument is valid. It follows the valid logical form called "modus ponens" (If P. then Q. P. Therefore, Q). I learned the term modus ponens in philosophy, but it's also used in law too!! Modus ponens is latin for "the method of affirming".
I find I do this intuitively... I just didn't have the terminology. I use relationship diagrams instead of the A -> B thing. I'm realizing I was overcomplicating this quite a bit.
@justing227 Oh wow no wonder, I was going to say this reminds me of discrete math I took in high school LOL
@AichaCisse They're talking about a comparison. When you compare two things, one side is usually being described as having more of some quality ("winner")!
I think I need to stop second guessing myself, there were a few that I got wrong... If I had gone with my initial instinct, they would have been correct... lol.
@TOMCRUISE I see your confusion. If you click answer, it has the intermediate conclusion in what would be the premise font (the blue italics).
@LastLivingLily0 I thought this too. Then I realized in the conclusion was the same term in the premise ("The true rate of earnings") and realized there was a relationship between these claims. I think this is basically what you just said in your comment, just rewording into my "own" words.
@daysdreaming I also thought tigers was weakest because it has less claims/evidence that support the conclusion.
@DortheaElridge I wouldn't rely on that as a rule. I think it is best to think of it as "premises are the claims offered as reasons and conclusions are the claims being supported". For example, John is a bachelor therefore, John is unmarried. These claims both lack detail.
@themoodyactivist Here is another example to think about: Maria probably studied hard for the exam, since she got the highest score in the class. Test the first direction.... In a world where Maria got the highest score on the exam. Does it make it more likely that Maria studied hard for the exam? Yes. Getting the highest score is evidence that she likely studied hard. But then try reversing it in the other direction. In a world where Maria studied hard for the exam, does it make it more likely that she got the highest score on the exam? No. She could have studied hard but still did poorly or not as good as someone else. Therefore, the premise is: Maria got the highest score in the class and the conclusion is: Maria probably studied hard. The fact Maria got the highest score in the class is evidence (support) that she studied hard.
To help anyone's confusion, this passage is just explaining how to identify a premise and conclusion. And the way to figure this out is to ask yourself "If claim A were true, would it make claim B more likely to be true?" If the answer is yes, then A is supporting B. A= Premise, B= Conclusion
@BrieV These are some tricks I used to memorize it: Sufficient = guarantees and Necessary = required. Sufficient starts the arrow and necessary is needed at the end of the arrow (S) ----> (N).... Also to convert the statements into "IF.... THEN" Sufficient is always IF portion and necessary is always the THEN portion of the statement.