Closer to the Sun

Student: I dropped a cashew.

Me: I see it. I'll get it later, just finish this problem.

[later]

Student: I dropped my pencil.

Me: I'll get it. Here, use mine.

Student: Where'd it go?

Me: It's next to the cashew.

Student: Oh, I see it. It's closer to your chair than to the cashew.

Me: Really? Well, you could do that with anything. The pencil is closer to the cashew than the sun.

Student: Everything is closer to the cashew than it is to the sun! The people in China are closer to the cashew than they are to the sun.

Me: Haha. True.

Student: The moon is closer to the cashew than to the sun!

Me: Look. I've thrown the cashew away. Can we do this math now?

Student: Mars is closer to the cashew than it is to the sun.

Me: Yes. Ok. Let's move on.