When you start playing music when you're quite young, it's easy to stay young. And then you're touring, and you see people who've been on the road for 10 or 15 years and they just haven't grown up at all.
Whenever you deal with science fiction you are setting up a world of rules. I think you work hard to establish the rules. And you also have to work even harder to maintain those rules, and within that find excitement and unpredictability and all that stuff.