The video explanation was great. Thank you.

@Ellispiper @AdamSon , super helpful. Thanks so much!

Can we have a sample LSAT question that utilizes the skills we learned for negating quantifiers and conditional statements?

Re: "If you stop to think about the second and third requirements, you might realize that the third is redundant. A buyer who finds an antique desirable for its intrinsic qualities – the inherent qualities, such as its shape, color, material, overall aesthetic, etc. – by definition is someone who finds the antique desirable for more than just its value as an investment. So, if the second requirement is satisfied, the third is automatically satisfied."

Is there a better explanation as to why the third argument, not just for its value as an investment, is redundant? My diagrams looked like this:

buy --> confident-auth and desire-intrinsic and /invest

/confident-auth or /desire intrinsic or invest --> /buy

Answer choices B and C looked attractive to me because it seemed logical that valuing the antique for its investment is what guaranteed not buying the expensive antique vase. After the watching video explanation and reading the written explanation, I'm still unsure why the investment argument is redundant.

Are there other examples where it's safe to drop one of the conditions in the stim?

What does it mean for a condition to be necessary as opposed to sufficient?

A necessary condition is guaranteed to occur if the sufficient condition is met. If one fulfills the sufficient condition, they will fulfill the necessary condition. The sufficient condition is enough to meet the necessary condition. If a necessary condition isn't met, we can conclude that the sufficient condition was never fulfilled.

However, if a necessary condition is met, we cannot conclude that the sufficient condition was fulfilled. The sufficient condition is merely one of various possibilities to fulfill the necessary condition.

If one goes to the library, then one reads books.

L -> B

x^L

---------

x^B

@AdelaideQuaye , this is what helped me:

(1) Going to the store guarantees buying milk. (2) But if someone bought milk, it doesn't mean we can conclude they went to the store. (3) They could have bought the milk elsewhere-- like from a neighbor or a street vendor (other subsets that are NOT the store).

If I didn't buy milk, that means I didn't go to the store: If I'm not in the superset, I'm definitely not in the subset.

1. store --> milk

2. milk --> store

3. milk --> ???

subset --> superset

superset --> subset

Validity requires analyzing the premises of an argument in order to determine if an argument's conclusion is valid or invalid.

If the sky is red, we'll have raining ducks.

The sky is red.

Therefore, we'll have raining ducks.

The premises lack truth. But the argument itself is valid.

Eating spinach guarantees eating a vegetable. But eating a vegetable doesn't guarantee eating spinach.

Superset: Law School

Subset: Harvard Law

Being in Harvard Law is sufficient to be in law school.

Being in law school is necessary to be in Harvard Law.

If a student is in law school, we cannot conclude that they attend Harvard Law. Law school (a superset) contains several other schools (subsets).

If a student isn't attending law school, we can conclude that the student is not in Harvard Law. (Contrapositive)

Being an "A Lister" is sufficient enough to be an "AMC Stubs Member". But being an "AMC Stubs Member" doesn't mean I'm an "A Lister".

Being an "AMC Stubs Member" is required to be an "A Lister".

Why is everything in this video so confusing?

4/5 but I'm taking a long time to answer these questions. I'll give myself some grace as I don't think I'm in a position to answer these questions within 1 minute. Understanding the stim has been my biggest struggle. I had to read each stim and answer choices several times before selecting an answer.

My brain hurts

Summer blockbusters, which often make a lot of money, take up most of the theater space.

Summer blockbusters take up most of the theater space, which is important to consider when planning to release indie movies during the season.

Wrestlers that perform a package piledriver get suspended. That isn't fair for those that perform a tombstone. They're both similar moves.

• "that" from first sentence modifies "Wrestlers"

• "That" in second sentence refers to first sentence.

• "those" in second sentence refers to "Wrestlers"

• "They're" refers to "package piledriver" and "tombstone"

This was hard.

Even though excessive alcohol is bad for your liver, we should celebrate by drinking some wine tonight since you got accepted into law school.

Instagram is the number one social media app.

All social media apps rot your brain.

Therefore, Instagram rots your brain.

All apps that rot your brain are not worth downloading.

Instagram is not worth downloading.