Quick tip for anyone struggling to find the sufficient and necessary conditions in examples that begin with an indicator (#2, 3, 5). Rewrite the question with the word "cannot."
Ex: No birds are trees.---> Birds CANNOT be trees. Then, the lawgic translation is B--> /T.
It works with the other examples as well: No holiday falls within the month of August= Holidays CANNOT fall within the month of August. (H--> /A) OR
August CANNOT have holidays. (A--> /H).
This worked much more intuitively for me than just figuring it out by myself. I guess you could also say that the negated necessary term will always be the second premise as well...Whatever works lol!
I am a little confused how we are picking the necessary versus sufficient conditions for these examples. The lesson just says "choose one," but it always just seems like the correct one without explanation of why the other one would not work. I think I am confused because by just "picking one" it makes it seem like either clause could be the necessary condition so it doesn't matter. But that is not the case right?
For example in question 5 we established that:
Sufficient: recent tech. advance producing
Necessary: not applied to producing power at traditional plants.
why can't it be?
Sufficient: applied to producing power at traditional plants.
Necessary: not recent tech. advance producing
If anyone has some insight on this I would appreciate it.
Question! I seem to always do it backwards to what the correct answer is, even after I recognize it and think critically about it. For example in Q 2, I put /(within August) → Holiday when the answer shows holiday → /(within August). Does it matter? I feel like they mean the same thing at the end the day so if it doesn't impact the final outcome of my learning, i don't want to spend unnecessary time on it. Thanks!
I'm confused, is "never" one of the indicator words for negate necessary? I assumed yes when answering the question (the indicator words for necessary conditions include "always", so it makes enough sense that it is included), but the previous video lesson only listed four (no, none, not both, cannot).
Does the order really matter since it's the same logic? I had it that way since No is before holiday and made that the necessary condition. Am i missing something?
I'm not sure if i may have missed this being discussed but does it matter which side I label my conditions like for example for number 2 I labeled my answer as
No holiday falls within the month of August. (question)
/Holiday-> Month of August
/August-> Holiday
technically the answers are correct just placed in the wrong order, but is it wrong if its not in the correct order? I understand what the question is trying to say and trying to tell me as it gets the point across that it isn't august if it is a holiday or vice versa. Sorry if this is a silly question.
#feedback I think this is a dumb question but I have the symbols completely down and all of my loose translations logically follow the structure, but I'm struggling with the specifics after translation.
For example, Q1: Lazy cats never develop heart disease.
disease-> /lazy cats
lazy cats -> /disease
When translating to if-then format, is it "if a cat develops heart disease, then it is not a lazy cat," or is it just purely saying, "If something develops heart disease, then it is not a lazy cat?" Are these statements generalizing to ALL things or strictly speaking about the domain of cats (if that makes sense..)
I got question 1 wrong because I wrongly inferred to add a double negative when I only needed to add one negative. Meaning that lazy cats do not develop heart disease.
Just to be clear, of negations: to make it necessary the necessary condition must go on the right. To make it sufficient, the sufficient condition goes on the left. Where to place the conditions based on necessary or sufficient isn't quite clear to me.
is there a place where I can find just a bunch of questions that incorporate all 4 groups so I can practice identifying them?
3
Topics
PT Questions
Select Preptest
You've discovered a premium feature!
Subscribe to unlock everything that 7Sage has to offer.
Hold on there, stranger! You need a free account for that.
We love that you want to get going. Just create a free account below—it only takes a minute—and then you can continue!
Hold on there, stranger! You need a free account for that.
We love that you came here to read all the amazing posts from our 300,000+ members. They all have accounts too! Just create a free account below—it only takes a minute—and then you’re free to discuss anything!
Hold on there, stranger! You need a free account for that.
We love that you want to give us feedback! Just create a free account below—it only takes a minute—and then you’re free to vote on this!
Subscribers can learn all the LSAT secrets.
Happens all the time: now that you've had a taste of the lessons, you just can't stop -- and you don't have to! Click the button.
174 comments
This lesson made all the other indicator lessons make sense. Soooo glad I finally got it.
What's with "Never" being an indicator when that wasn't stated?
I understand it now
this was suspiciously easy
A step implied but left out is to ignore the "No/None/Not both/Cannot/etc." indicator when negating and writing the statements.
#feedback
what about 'never'? It is not listed in your video.
does the order matter bc I did like this for number 3 No birds are trees.
T->/B
B->/T and
Answer was...
bird → /tree
tree → /bird
on question 2, I answered
/holiday -> in august
/in august -> holiday
is this logically the same as
holiday → /(within August)
within August → /holiday
or am i missing something? #helppls
5/5!!!
I see the vision
Quick tip for anyone struggling to find the sufficient and necessary conditions in examples that begin with an indicator (#2, 3, 5). Rewrite the question with the word "cannot."
Ex: No birds are trees.---> Birds CANNOT be trees. Then, the lawgic translation is B--> /T.
It works with the other examples as well: No holiday falls within the month of August= Holidays CANNOT fall within the month of August. (H--> /A) OR
August CANNOT have holidays. (A--> /H).
This worked much more intuitively for me than just figuring it out by myself. I guess you could also say that the negated necessary term will always be the second premise as well...Whatever works lol!
I am a little confused how we are picking the necessary versus sufficient conditions for these examples. The lesson just says "choose one," but it always just seems like the correct one without explanation of why the other one would not work. I think I am confused because by just "picking one" it makes it seem like either clause could be the necessary condition so it doesn't matter. But that is not the case right?
For example in question 5 we established that:
Sufficient: recent tech. advance producing
Necessary: not applied to producing power at traditional plants.
why can't it be?
Sufficient: applied to producing power at traditional plants.
Necessary: not recent tech. advance producing
If anyone has some insight on this I would appreciate it.
Question! I seem to always do it backwards to what the correct answer is, even after I recognize it and think critically about it. For example in Q 2, I put /(within August) → Holiday when the answer shows holiday → /(within August). Does it matter? I feel like they mean the same thing at the end the day so if it doesn't impact the final outcome of my learning, i don't want to spend unnecessary time on it. Thanks!
I'm confused, is "never" one of the indicator words for negate necessary? I assumed yes when answering the question (the indicator words for necessary conditions include "always", so it makes enough sense that it is included), but the previous video lesson only listed four (no, none, not both, cannot).
Delete this.
No holiday falls within the month of August
I had:
August —> /Holiday
Holiday —> /August
Does the order really matter since it's the same logic? I had it that way since No is before holiday and made that the necessary condition. Am i missing something?
mine are always backward.. What am i doing wrong?
test
Not trying to get overconfident but this is making a lot of sense. Hopefully this trend continues when I get to full questions!
I'm not sure if i may have missed this being discussed but does it matter which side I label my conditions like for example for number 2 I labeled my answer as
No holiday falls within the month of August. (question)
/Holiday-> Month of August
/August-> Holiday
technically the answers are correct just placed in the wrong order, but is it wrong if its not in the correct order? I understand what the question is trying to say and trying to tell me as it gets the point across that it isn't august if it is a holiday or vice versa. Sorry if this is a silly question.
#feedback I think this is a dumb question but I have the symbols completely down and all of my loose translations logically follow the structure, but I'm struggling with the specifics after translation.
For example, Q1: Lazy cats never develop heart disease.
disease-> /lazy cats
lazy cats -> /disease
When translating to if-then format, is it "if a cat develops heart disease, then it is not a lazy cat," or is it just purely saying, "If something develops heart disease, then it is not a lazy cat?" Are these statements generalizing to ALL things or strictly speaking about the domain of cats (if that makes sense..)
Have I lost my mind? Question 1 uses "never" as the operator, yet in my lesson on Group 4 words, it doesn't include the word "never"?
I got question 1 wrong because I wrongly inferred to add a double negative when I only needed to add one negative. Meaning that lazy cats do not develop heart disease.
Just to be clear, of negations: to make it necessary the necessary condition must go on the right. To make it sufficient, the sufficient condition goes on the left. Where to place the conditions based on necessary or sufficient isn't quite clear to me.
is there a place where I can find just a bunch of questions that incorporate all 4 groups so I can practice identifying them?