Jacobi thinks about language, thinks about lions and and language, and laughs a little to himself but doesn't share with the class because Eiffel's stupid expression is something he doesn't know if he can describe in full.

"Nearly," he points out. "But what I think of when I hear chair is absolutely different than what you think of. Might not even have four legs. Might be made of wood or plastic or iron or a bag of air."