l,
I think there are a few points to make here.
First, every author thinks his/her argument works. This is related to the "Mind of an LSAT author" vs "Mind of the makers of the LSAT" distinction we sometimes talk about. I know the Logical Reasoning Bible has a discussion about this; I also found a post by Adam discussing it a bit:
https://forum.powerscore.com/lsat/viewt ... 336#p47336
There, Adam says:
In an Assumption question, you are right that we need to put ourselves in the mind of the author. We do not have to accept that his argument is valid - it's almost certainly NOT a good argument, because something has been left out. However, we have to approach it with the idea that the AUTHOR thinks he is right, and that means there are certain things that he has to believe are true, even though he didn't say them. Those are the assumptions, and those are what we are looking for.
From the
author's perspective, there is nothing hypothetical about the argument. The author thinks he/she is making a point, and, in order to make that point, the author had to make certain assumptions. Answer choice (D) is one of those assumptions.
A second point I have is as follows (and it's related to the first point). The possibility that answer choice (D) talks about might not exist in reality, but the
author would not recognize that. If that possibility is illusory, then the author would never have even attempted this argument in the first place, because then superior conductors would just be logically impossible.
A third, related, point is this - note that in the previous paragraph I said that superior conductors would be logically impossible if answer choice (D) is false. That's stronger than saying that superior conductors don't exist in reality. Answer choice (D) is saying that something "can" be the case, not that something "is" the case. So if the conditions for superior conductors don't exist in our reality, that's not enough to defeat the author's argument. If the conditions for superior conductors are not possible at all, THEN the author is wrong. I think I can illustrate with an argument:
"Anyone who wins the World Championship, the Wijk aan Zee tournament, and the Hastings tournament in the same year will be awarded a medal made of rhodium. The value of this medal exceeds our current account balance. Thus, we should make some effort to increase our account balance."
Now, what if no one ever has won or ever will win all of those tournaments in the same year? I don't think that's fatal to the argument - unless we somehow know that no one will win all those tournaments, it makes some sense to try to prepare for the eventuality. What if, instead, it's not possible to win all of those tournaments? Maybe Wijk aan Zee and the World Championship never occur in the same year, or there's some other problem. THAT would be utterly fatal to the argument.
I think similar considerations apply to superior conductors. If orchestras don't behave a certain way, those superior conductors don't exist; if orchestras
can't behave a certain way, the very idea of a superior conductor is fatally undermined. Avoiding the latter problem is what answer choice (D) is accomplishing.
Robert Carroll