Well, it depends. The idea that I don't know all the words sort of comes naturally to me, like reading subtitles, although I can certainly understand how it would be a bother. Similarly, it can be used to, and come across as, a show of intellectual prowess which only serves to make one look petty. For some reason, I keep getting that reaction from a lot of the scholarly work school makes me read, but much less so from Vance.