Isn't the conclusion here false? The two premises are sufficient conditions. So just because /Jane is no happy, does not mean /sunny day. There could be many other sufficient conditions for her to be happy, birds singing is only one of them. Can someone help explain?
I am leaving a reply because it seems no one else has. This has helped me a bit. Normally, I look at formatting, topic, etc. So much more than what I need, and should be looking at.
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20 comments
is there a problem here?
argument is one:
A -> B
/B
/A
but argument two is:
A<->B
/B
/A
if and only if is different from if? is this a flaw in the lesson or are they treated the same on the LSAT?
#HELP
“If A, then B” means the exact same thing as “A only if B.”
Huh??? The former means A is sufficient to make B happen; the latter means B is necessary for A to happen. Those ideas are not the same.
#Help
Parallel reasoning has always been my Achilles heel. Lets see if we can make some magic happen.
I can already tell, this section is going to make me angry.
If the stimulus is flawed, I know the correct AC has to be flawed too, but does it have to be the same flaw?
For instance, let's say the stimulus overlooks a possibility. Would the correct AC also have to be overlooking a possibility?
If it is a sunny day, birds sing.
If birds sing, Jane is happy.
So, if Jane is not happy, it’s not a sunny day.
Isn't the conclusion here false? The two premises are sufficient conditions. So just because /Jane is no happy, does not mean /sunny day. There could be many other sufficient conditions for her to be happy, birds singing is only one of them. Can someone help explain?
I love this new explanation! I am coming back to review foundations, and I saw this!
I am leaving a reply because it seems no one else has. This has helped me a bit. Normally, I look at formatting, topic, etc. So much more than what I need, and should be looking at.