#22 - On Wednesdays, Kate usually buys some guava juice

[hangry5626]

I was able to diagram the stimulus as:
W--m-->GJ-->LFS

For A I'm confused on diagramming with "only"
My diagram looked like:
D--m-->K

ONLY TCI are allowed to use K
TCI-->K
CP: /K-->/TCI

I am not understanding the link. Would you mind helping?

[Rachael Wilkenfeld]

Hi hangry,

You have the relationship turned around a bit for answer choice (A). The word "only" modifies the teachers at the culinary school. The kitchen is then the sufficient condition. So if you can use the kitchen, you must be a teacher at the CI.

K TCI

So then the answer choice would look like

dinner K TCI
dinner TCI

Hope that helps!

[Dancingbambarina]

I understand this may be a far-fetched question, but surely because ONLY describes the necessary condition, MOST should also be a necessary condition indicator. Why in LSAT logic are they treated differently when diagrammed?

Thanks very much!

[Dancingbambarina]

HI

Surely diagramming...

Wednesday (most)-----> guava juice

... would be a misrepresentation of the relationship since "most" refers to guava juice and not most wednesdays?

[Adam Tyson]

In this case, "most" refers to Wednesdays, because this is something she usually does on Wednesdays. If it modified guava juice, that would be like saying that most of the guava juice she buys is on Wednesdays, and that's not what the stimulus is saying. For all we know, she buys a tanker truck full of guava juice every Saturday, and on Wednesdays she buys a small bottle. It's just that she has to buy it on most Wednesdays, because that is what she usually does on Wednesdays.

Each of the following means the exact same thing:

On Wednesdays, she usually buys guava juice.

On most Wednesdays she buys guava juice.

On more than half of all Wednesdays, she buys guava juice.

She buys guava juice on most Wednesdays.

Wednesday is a day on which she usually buys guava juice.

Consider a similar statement: On Wednesdays, Adam usually tutors students. That happens to be a fact about me: I rarely take Wednesdays off. Now, does that mean that usually when I tutor students, it's Wednesday? Not at all, because I tutor almost every day. That means that usually when I tutor, it is some day other than Wednesday. More than half of the days that I tutor students, it's not Wednesday.