by tommywallach Thu Jan 24, 2013 2:23 am
Hey Patrice,
Really good point. Indeed, "but" and "and" mean effectively the same thing, in terms of grammatical usage. They are both conjunctions, linking two pieces of a sentence.
"But" is cool because it introduces a contrasting piece of information, which is helpful for meaning.
"I want this sandwich and it costs $20."
"I want this sandwich but it costs $20."
Notice, in the second sentence, it's clear that I'm experiencing some anguish over the cost of this sandwich. In fact, it seems to be implying that I can't afford it (though you certainly couldn't infer that on an LSAT question).
However, from an LSAT logic perspective, these two sentences effectively mean the same thing: two things are true about the sandwich.
Hope that helps!
-t