#feedback

i think there is a typo in the explanation of answer choice B. "central purpose of passage B is to find fault with author B’s way of approaching his argument. She thinks that author B is too extreme in his dismissal of historical approaches..."

I believe the bolded portions are meant to say Author A

@embino I was struggling a bit with this one as well, until I realized that they are using "authenticity" as a referential in the sentence. It is meant to refer back to the behavior the picaro engages in, the behavior to which he is yielding. When they use "yields to..." it sort of means you are holding back and letting your impulses take the wheel (and an impulse can be reasonably assumed to mean a natural inclination)

@JeffreyVargas7 he was offering an alternative answer choice  to show what a harder difficulty question would look like

@KennedyW i think its because it says "most large nurseries .... sell only plants that are guaranteed to be disease free" not all nurseries do this, only most.

so its LN -m-> Disease Free

@CalebLippe it means that they were not entirely disease free, as they are guaranteed to be

#feedback

it would be helpful to see an argument that is NOT valid. So we could see an example of how an invalid argument would be fed to us on the LSAT.

@msfro

Q4: "all grad level phil courses are not available to undergrads" is the same as "no grad level phil courses are available to undergrads"

It helps me to think of all conditionals as "if, then" statements:

if it is a grad level course, then it is not available to undergrads. G>/U

if it is available to undergrads then it is not a grad level course U>/G

the answer choice was not the contrapositive because there is no contrapositive to "some" statements. to negate the statement all youre saying is that it is not the case that some grad level courses are available which then means both that:

no grad level courses are available

all grad level courses are unavailable. 

Q5:

all you're doing to negate this statement is denying the relationship, or saying that it is possible that a record sells well and you will not be famous. Implying also that there is a scenario in which "some people whose records sell well are not famous"

@ArthurWhite obscene imagery? get over yourself

#help

so i just want to be clear that this does not mean p>c as well as c>p

if it is a pet, then it is a cat,

if it is a cat, then it is a pet.

the <s> does not translate into if/then?

@tar go back and review the conditional logic lessons. they really helped me!! I took the LSAT back in June and did use my scratch paper for complex conditionals like this. I would recommend taking the time to diagram these complex ones so you don't get lost in it. It made me faster to realize that you can only read equations from left to right. for example in this one you are given

If A then B then C then D

you can immediately knock out answer choices A, C, D, since they all start their conditionals with "If D" we simply cannot start at "If D", so ignore those.

We can knock out E because it follows "If C then B" we cannot draw that conclusion, the equation only works one way (if B then C).

BUT the only way to get better at this is getting a concrete understanding of conditionals. If the 7sage lessons aren't working for you try some other sources like youtube videos to help understand. this is a skill that CAN be honed.

@Nakim Ryan Maybe jump back to the conditional logic lessons. I found that it helped to remember that the sufficient condition will ALWAYS be on the left side of the equation and you can only read these equations from left to right.

We also know that "if" signals a sufficient condition.

when you see that answer choice B starts with "if the population exceeds 250+"

(250+ --> self sustaining)

you can automatically eliminate that answer choice because our equation from the stimulus doesn't start with that. our equation starts with "if it is to be self-sustaining"

(self sustaining --> 250+)

OR

(/250+ --> /self sustaining)

Now, if answer choice B started with a contrapositive to our equation like "if the population doesn't exceed 250," then we could consider it since it gives us a valid starting point

(/250+ --> /self sustaining)

hope this helps!

@katrina its not really an assumption though. It is an extension of the conditional logic since we are given that:

self sustaining --> 250+ panthers

BUT the current conditions of their habitat tells us that:

if habitat is not increased --> not 250+ panthers.

SO:

if it is to be self sustaining, then there must be 250+ panthers, and if there are to be 250+ panthers their habitat must increase.

Also, though, through process of elimination you will find that none of the other answer choices are correct.

@Nakim Ryan there is an option at the top of the article that says "show question" Will show you the question and all answer choices

@Jakobmisey with the only's it helps me to thing of it in the negative. Only A can do Y? well then i guess if NOT A, then it can't do Y.

If not an Italian Plumber, then it cant fly....

if it can fly... then it MUST be an Italian Plumber

@Asg00024 I think they are trying to show that in Lawgic it is L -> 5+ and we are only given one half of the equation, that he arrived more than 5 min late. Maybe he had a doctors note, maybe the bell rang early. It's trying to show us that we can only KNOW that if he was cited as late, then he arrived past 5 minutes, or that if he did not arrive past 5 minutes then he was not late.

We cannot be certain that he was properly cited as late only from knowing the second part of the equation.

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