pawsplay said:
The part that makes it circular is when it is claimed that you cannot judge if a book is worthwhile until you have read it. If you excise (ii), the argument simply ceases to exist. I already accounted for that several posts ago.
pawsplay says: I think the PHB will suck.
someone says: You can't make that judgment without reading it.
pawsplay says: why not?
someone says: Because you cannot judge its worth without familiarity.
pawsplays says: How can I become familiar?
someone says: By reading it.
pawsplay says: Didn't you just say that?
This isn't really going anywhere, but I'll have one last go.
Yes, the argument falls over if you excise (ii).
Likewise for the following argument:
(i) All humans are mortal;
(ii) Socrates is human;
Therefore,
(iii) Socrates if mortal.
But the most famous of all syllogisms is not, therefore, a circular argument.
In your dialogue, someone asserts
that you can't make that judgment without reading it. Pawsplay asks for a reason. Someone offers one, namely,
that you cannot judge its worth without familiarity. Pawsplay asks how to become familiar, and is told
that you can become familiar by reading it. There is no circularity. Each of the italicised propositions is a distinct proposition. The first such proposition is the conclusion of the argument. The second two are the premises. Each premise contributes to the argument, but neither entails the conclusion in isolation. What more do you want from an argument, besides the truth of the premises?
By the way, the answer to Pawsplay's final rhetorical question is
No. That is someone's first assertion that familiarity depends upon reading. Now, if Pawsplay wants to dispute that reading is the sole path to familiarity, I'll agree. But there's still no circularity.
If Pawsplay had asserted that it was possible to be familiar without having read the PHB, there would still be no circularity, but at least there would be a begging of the question against Pawsplay (because the argument would depend upon an unsupported premise that Pawsplay has rejected). But Pawsplay not having asserted any theory of familiarity, there was no begging of the question either.
pawsplay said:
The argument was and is, "You cannot judge a book without reading it, because you cannot judge a book without reading it." That might be true, but it's not an argument.
No, the argument was and is, "You cannot judge a book without being familiar with it, and familiarity depends upon reading it; hence, you can't judge the PHB without reading it." The conclusion is (IMO) doubtful, but the argument is not circular.