How Do I Know What I Think Until I See What I Say?

So I was reading this article from Poets & Writers online, a Q&A with four literary agents, and I came across this answer to the question of whether the agents thought that MFA students' focus on the "business of writing" was good for them: RUTMAN : Ultimately, no. If that is more of a priority than the work, it can't be all good. I mean, it's fine that they have a sort of professional track and that they're exposed to whatever realities they are ultimately going to encounter. But when they take a sort of sporting interest in it... STEINBERG : It's a good way to eliminate potential people, for me at least. When they ask me, "What's the query letter consist of?" I usually think, "Well, that's probably not a potential client." RUTMAN : It's true. This was an eye-opener for me, not because I disagree necessarily, but because most of the things I hear from agent blogs and industry websites and conferences is "