In the pilot because of the way they talked with each other Hank asked if the were really 16, and have to say that the writers have made the two of them mature beyond their years by a long shot. I guess you could chalk Tuckers maturity to having to be resourceful because he's been on his own so much. But over and above that he also seems to be a very well educated young man, and Libby other than having cyberchondriasis is likewise smarter than one would expect. It's also nice to see they do not seem to be into that low life rap crap. I guess it has to do with education & intelligence the smarter you are the less likely your going to be drawn into such nonsense.