Q3 just had me crash out on my boyfriend and now my dog is scared. Isn't ONLY as necessary condition indicator? But now the comments are saying "the only" is sufficient. Some one help lol
For those wondering why they got Q3 wrong it's because it starts with "The only" which is actually a sufficient indicator. If it started as "Only" then it would have been a necessary indicator. Hope that helps :)
I really don't understand #3. Where "only" is supposed to be a necessary condition indicator....the explanation says it is a sufficient condition. I've been trying to understand this for an hour now.
@InderpalSingh I want to say the word 'only' in number 3 is modifying the subject/noun instead of acting as the necessary indicator? maybe if it had started with "Only If -" then it would qualify as such.
4/5! But why is #3 approached as a sufficient condition? Isn't 'only' a necessary condition indicator? Wish the video would have spent more time explaining that rather than breaking down modifiers of the word myth :/
@RyanAlexander Where is this information? I looked back at the group 1 and 2 explanation video and "only" is under group 2 . I haven't seen anything about "the only"
For #5, how do you know when to translate the whole clause "family ties become frayed and snap" as one statement rather than two? For example, why is it not "family ties become frayed" and "family ties snap"
i.e. why is does it not translate to:
/communication --> (family ties fray) AND (family ties snap)
/(family ties fray) OR /(family ties snap) --> communication
This is deeply frustrating. There should have been an earlier explanation to distinguish cases in which "only" is used in the sufficient condition versus the necessary condition. This course cost far too much to lack in clarity in the word "only". Since "only" will be a frequent word on the test, it would be helpful to have a video on its use cases for students to distinguish when it's being used as a sufficient indicator vs. a necessary indicator.
@rydlerjune I think you’re thinking a bit more advanced than this particular lesson. Technically yes, but in this scenario it’s all one condition, not two
@VanessaMancuso23 go back a couple lessons. Its in the sufficient list.
And try it out for yourself. Try to form "The only oral myths that have survived are the ones that were eventually written down." in such a way that "only" comes before "written down" instead of "survived". You won't be able to use "the only", you'll have to use "only" by itself. ie, "Only the myths that were written down are the ones that survived".
Its kinda an anecdotal exercise to prove to yourself there is more of a significant difference between "the only" and "only" than first meets the eye!
"the only" marks sufficiency and "only" marks necessity.
Just like "if" marks sufficiency and "only if" marks necessity!
@Jbshallenberger - I am also confused on #3. I went back to the previous video that introduced the Group 2 indicators, and "only" is at the top of the Group 2 indicators:
@Jbshallenberger I had the same thought, but I think it would change if it said something like "Only oral myths that have survived were eventually written down."
As a thought experiment, if there were 5 oral myths that were written down, then all 5 of those survived because they were written down. There may be 10 total surviving oral myths, but it is not a necessary condition that all of them be written down. The other 5 may have survived for other reasons (maybe they are really captivating stories that never needed to be written down.)
Maybe another way to think about it is to say that even if we remove the word "only" from the question stimulus, it would not change the meaning of the sentence:
"The only oral myths that have survived are the ones that were eventually written down."
I've been struggling with the wording after the lawgical part, I think thats whats tripping me up the most.
for example, for 1. I put AS -> Philadelphia, /philadelphia -> /AS.
However the answer is philadelphia -> sunny, /AS/ Philadelphia.
I have 0 idea why this is wrong and also dont get the worded version. Is the contrapositive version If its not always sunny then it is not philadelphia?
@JeffreyRamirez If you are stuck mixing up the group 1 and 2 indicators, but recognize the conditional relationship, you can always think through it logically by rephrasing!
"It's always sunny in Philadelphia"
Think: Is this saying (1) "if it's sunny, I'm in Philadelphia" or rather (2) "if I'm in Philadelphia, it is sunny".
Thinking through it, this has to be the latter (2). The first doesn't make sense because it could be sunny in other places, not just Philadelphia! The second makes sense as another rephrasing of the sentence because if you're in Philadelphia, it's always sunny! It matches up with the original sentences' concept.
@JeffreyRamirez Remember that you do not include the conditional indicator in your analysis. The indicator word is telling you that what comes next is the important part. "Always" is the indicator word, everything after that word is the sufficient condition, but the word "always" itself is not part of the sufficient condition.
470 comments
Q3 just had me crash out on my boyfriend and now my dog is scared. Isn't ONLY as necessary condition indicator? But now the comments are saying "the only" is sufficient. Some one help lol
@Malcngham
@Malcngham you are right that the word only usually indicates necessary, but “the only” is a sufficient indicator.
Not understanding why #4 is incorrect. I thought that when indicated a necessary condition so I wrote "hurricanes hit ->abundant rain falls"...help.
@EvelynnEdiger "ONLY when" typically indicates necessary condition not "when" alone.
For those wondering why they got Q3 wrong it's because it starts with "The only" which is actually a sufficient indicator. If it started as "Only" then it would have been a necessary indicator. Hope that helps :)
I really don't understand #3. Where "only" is supposed to be a necessary condition indicator....the explanation says it is a sufficient condition. I've been trying to understand this for an hour now.
I thought only was a necessary condition indicator?? So for 3 why is the stuff that follows not necessary????
@InderpalSingh I want to say the word 'only' in number 3 is modifying the subject/noun instead of acting as the necessary indicator? maybe if it had started with "Only If -" then it would qualify as such.
Banger reference with that first statement
4/5. I got confused on q1
the title of this was quite misleading because it presumes that this is all group 2
4/5! But why is #3 approached as a sufficient condition? Isn't 'only' a necessary condition indicator? Wish the video would have spent more time explaining that rather than breaking down modifiers of the word myth :/
@hjr210400 In my notes from a previous video, I have "the only" as a sufficient condition indicator, which is what that question starts with.
Maybe if it had started with just "only", then it would've been considered a necessary condition
It is a little confusing though but that's how I was able to get it right.
Is "where" a sufficient condition indicator?
4/5 🥳
I reversed #2 by saying CCS —> NASA but I was able to understand why I was wrong so that’s good too.
4/5 #3 was confusing
@petvma agreed! Why is it sufficient if it uses the “only” indicator which is usually for necessary conditions.
@porkdumpling "The only" is a sufficiency indicator, "only" is a necessity indicator.
@RyanAlexander Where is this information? I looked back at the group 1 and 2 explanation video and "only" is under group 2 . I haven't seen anything about "the only"
@TaylorNicole https://7sage.com/lessons/foundations/conditional-and-set-logic/group-1-sufficient-condition-indicators
scroll down to the diagrams below the video. It's mentioned separately in a couple of the videos as well.
For #5, how do you know when to translate the whole clause "family ties become frayed and snap" as one statement rather than two? For example, why is it not "family ties become frayed" and "family ties snap"
i.e. why is does it not translate to:
/communication --> (family ties fray) AND (family ties snap)
/(family ties fray) OR /(family ties snap) --> communication
This is deeply frustrating. There should have been an earlier explanation to distinguish cases in which "only" is used in the sufficient condition versus the necessary condition. This course cost far too much to lack in clarity in the word "only". Since "only" will be a frequent word on the test, it would be helpful to have a video on its use cases for students to distinguish when it's being used as a sufficient indicator vs. a necessary indicator.
@Arkavian i think in the conditional and set logic folder, GROUP 1 AND GROUP 2 are specifically for the indicator words "only" and "the only"
@Arkavian Were you ever able to understand this issue? I'm currently stuck on it
But how is the first one even a conditional statement, or are we not worrying about that right now and just looking for indicator words?
@DiyaOmkar219 Always = All, Every.
IMHO
@DiyaOmkar219 The condition is that if you are in Philadelphia, it must be sunny. If it's not sunny, you mustn't be in Philly
For this one I find it really helpful to identify the indicator word and note if it's sufficent/necessary condition indicator and then move from there
@anamat I agree. I think this is a case where simply memorizing the indicator words is a game changer
for question 5, isn't "or" the contrapositive of "and"?
@rydlerjune I think you’re thinking a bit more advanced than this particular lesson. Technically yes, but in this scenario it’s all one condition, not two
Lost me on Question 3:
If the word "only" indicates that a necessary condition will follow, why is it considered the sufficient condition and not the necessary condition?
@Jbshallenberger "The only.." indicates sufficient. This is different than "Only...", which does indicate necessary.
@Jbshallenberger when did it say that "the only" is sufficent ? I did no see that anywhere
@VanessaMancuso23 go back a couple lessons. Its in the sufficient list.
And try it out for yourself. Try to form "The only oral myths that have survived are the ones that were eventually written down." in such a way that "only" comes before "written down" instead of "survived". You won't be able to use "the only", you'll have to use "only" by itself. ie, "Only the myths that were written down are the ones that survived".
Its kinda an anecdotal exercise to prove to yourself there is more of a significant difference between "the only" and "only" than first meets the eye!
"the only" marks sufficiency and "only" marks necessity.
Just like "if" marks sufficiency and "only if" marks necessity!
@Jbshallenberger - I am also confused on #3. I went back to the previous video that introduced the Group 2 indicators, and "only" is at the top of the Group 2 indicators:
@Jbshallenberger I had the same thought, but I think it would change if it said something like "Only oral myths that have survived were eventually written down."
As a thought experiment, if there were 5 oral myths that were written down, then all 5 of those survived because they were written down. There may be 10 total surviving oral myths, but it is not a necessary condition that all of them be written down. The other 5 may have survived for other reasons (maybe they are really captivating stories that never needed to be written down.)
Maybe another way to think about it is to say that even if we remove the word "only" from the question stimulus, it would not change the meaning of the sentence:
"The
onlyoral myths that have survived are the ones that were eventually written down."If then statements, and also checking the contrapositive really helps
meow
@NolanWright murr
What really helped me transform the sentences into Lawgic was to do the if, then statement.
For example, on question 4:
If abundant rain falls in sub-Saharan Africa, then hurricanes would hit the US mainland with particular frequency.
This helps me fully grasp the order of the sufficient and necessary conditions.
I've been struggling with the wording after the lawgical part, I think thats whats tripping me up the most.
for example, for 1. I put AS -> Philadelphia, /philadelphia -> /AS.
However the answer is philadelphia -> sunny, /AS/ Philadelphia.
I have 0 idea why this is wrong and also dont get the worded version. Is the contrapositive version If its not always sunny then it is not philadelphia?
any help would be greatly appreciated!!
@JeffreyRamirez Ive come to figure this out and realize I've been confusing group two and group 1. rewatching the videos and practicing helped a ton!
@JeffreyRamirez If you are stuck mixing up the group 1 and 2 indicators, but recognize the conditional relationship, you can always think through it logically by rephrasing!
"It's always sunny in Philadelphia"
Think: Is this saying (1) "if it's sunny, I'm in Philadelphia" or rather (2) "if I'm in Philadelphia, it is sunny".
Thinking through it, this has to be the latter (2). The first doesn't make sense because it could be sunny in other places, not just Philadelphia! The second makes sense as another rephrasing of the sentence because if you're in Philadelphia, it's always sunny! It matches up with the original sentences' concept.
@JeffreyRamirez Remember that you do not include the conditional indicator in your analysis. The indicator word is telling you that what comes next is the important part. "Always" is the indicator word, everything after that word is the sufficient condition, but the word "always" itself is not part of the sufficient condition.
is 'the only ' here in q2 be understand as all? the overinclusiveness of 'only' really confuses me
For some reason I am not understanding number 5. Since it's sufficient why is it not
Not communication --> Family ties fray and snap
/(family ties fray and snap) --> /(no communication)
Is it because at the beginning there's a "no" which is already negating? Please help!
Yes, the "no" is already negating. You have it correct, don't worry.
I made flash cards to help memorize group 1-4 conditional indicators, thought I’d share in case it would be helpful to anyone else. I’m redoing this course after getting through most of it and taking the lsat and not doing as well as I hoped. Looking back I realize how important it is to know these. https://quizlet.com/1153975729/lsat-7sage-conditional-indicators-to-share-flash-cards/?i=71yhg9&x=1jqY
@Elideebeep thank you
@AsmaAldhufri of course! :)