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[ptraye]

P: Organic vegetable A contains a greater quantity of high-quality nutrients than non-organic vegetable B.


P: Organic vegetables contain more and better-quality nutrients than non-organic vegetables.



(A): (Stacey will choose vegetables that have higher-quality nutrients.)


C: Given the choice between organic vegetable A and non-organic vegetable B, Stacey will choose organic vegetable A.

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Why is the 2nd premise better than the first premise?

Thanks.

[tommywallach]

Hey Ptraye,

Subtle issue here. We know that Stacey will choose vegetables with higher quality nutrients. We DO NOT KNOW that Stacey will choose vegetables with a greater QUANTITY of high-quality nutrients. The first premise only tells us that the first one has a greater quantity of high quality nutrients.

Think of this way. There might be a 100 nutrients we consider "high quality." The first premise tells us that A has a greater quantity of those nutrients. It doesn't tell us that A has higher quality nutrients than B, though, just a greater quantity of the whole category.

The second premise tells us that Organic veggies have better quality nutrients than non-organic, which would mean A has better quality nutrients than B (not just a greater quantity of high quality nutrients). Tough one!

-t