June 1993 LSAT Section 1 Question 16

Although all birds have feathers and all birds have wings, some birds do not fly. For example, penguins and ostriches...

fable on May 12, 2020

Some

I didn’t choose b because it had some twice in the answer choice. How is it still correct. It doesn’t say all chairs support it says some chairs support. In the video quantifiers was something that we were told to know but I feel like every time I strictly follow the qualifiers I’m getting a question wrong. Please help.

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Victoria on May 12, 2020

Hi @fable,

The wording is a bit tricky, but answer choice (B) actually says that all chairs have: (1) a seat; and (2) some support.

Therefore:

Chairs --> Seat

Chairs --> Some support

The answer choice then provides us with two examples: (1) decorative chairs; and (2) lion-taming chairs. These examples show us that some chairs or not used for sitting.

Chairs - some - not sitting

This parallels the reasoning in the passage:

Birds --> Feathers

Birds --> Wings

Two examples: (1) penguins swimming; and (2) ostriches running. These examples show us that some birds do not use their wings for flying.

Birds - some - not flying

Hope this is helpful! Please let us know if you have any further questions.

fable on May 13, 2020

I'm still confused, I understand what you said and I drew that same sketch to explain the quantifies and and S/N. Again my problem with this answer choice is the second some. Chairs ---> some support. The passage did not some in the Necessary. It is Birds ---> feathers. And birds ---> wings, not birds ---> some wings.

LeeLarue on May 31, 2020

@fable, this is how I broke the stimulus & answer choose B) down:

"All birds have feathers" ||. "All chairs have a seat"
B -> F. ||. C -> Seat

"All birds have wings" ||. "All chairs have SOME support" - here "some support" is NOT used as a quantifier but to TRICK you.
B -> W. ||. C -> SS

"Some birds don't fly". ||. "Not all chairs are used for sitting" - is in the quantifies lesson at the part when Mehran is explaining ALL
B -some- ~F. ||. C -some- ~S

And then the two examples penguins (birds) that don't fly (swim) & ostriches (birds) that don't fly (run) vs. chairs for (decoration) not sitting) & chairs for (taming lions) not sitting

Looks like this

(Penguins) B -some- ~F (swim) vs C (chairs) -some- ~S (for decorations)
(Ostriches) B -some- ~F (run) vs C ( chairs) -some - ~S (for taming lions)

Hope that helps.