[That unimpressed reaction though. He just smiles.] That's it. Impressive that something so simple could do so much, is it not? [He's a nerd so Dave just has to deal with that. Medicine is fascinating, okay!!

He assumes the "speed up" of the stocking he mentions comes from the fact that Dave now knows what the leaves look like. He cants his head slightly in confusion anyway.]

I see. Well I won't oppose that kind of help either if making it is not of any interest. You've already helped tremendously. [Which he doesn't blame him for either since it's a pain.]