He's happy to not have to explain what it does or doesn't feel like at this point, because he just doesn't know how to put it into words. It's purely sensory, in fact, but feeling like literally nothing usually means he's done it right, and what else is there to say?

Gregor, meanwhile, has a very thorough answer, which he appreciates especially because it's easy to visualize. Sure, he's probably missing out on all the finer details of the actual experience, but it's got to be close enough.

"And you're just born with this. When did you start trying to use it?" he asks. "Did your parents tell you, or did you discover it on your own?"