A possibility DeMorgan's Law doesn't address

JCEM2021 · February 2021

Given the rule, "If G and S are both in, then W is in," I understand the contrapositive is "If W is out, then G is out or S is out (since both G and S cannot be in). But why doesn't the contrapositive also allow for the possibility that G and S are BOTH out (as well as W being out)?

ajayan.williamson · February 2021

It does allow for that possibility. It's just the difference between "inclusive or" vs "exclusive or".

LOWERCASE EVERYTHING · February 2021

this might help solidify your understanding of the word "or" on the lsat!
https://7sage.com/lesson/why-is-or-so-confusing/

"Remember the rule of thumb is to read them like in sentence (1), the inclusive usage of the word."

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