[He pauses for a moment before turning back around to continue with his tinkering before finally he realizes that, in a sense, she's actually kind of right.]

Because I keep holding out stupid optimistic hope that some piece of Aang's divine Avatar wisdom is going to strike down and just hand me the answers to the questions I can't get answers to.

[He fiddles with it a little bit more before finally stopping and putting it down.]

You're right.

[He's not thrilled that she's right, but at least he'll admit it.]