To a biologist they are even more fascinating. Robert cross-references the way Don describes the nerve systems with his own knowledge, building yet another picture of how his own body functions. It's interesting to hear about it in the practise of something like this massage.

At the same time, he cuddles up on the pillow in a way that might be kind of weirdly adorable. You are definitely making your scientist happy, Turtle - though really, shouldn't it be the other way around?