I learn the whole time. I think it would be dull if I thought I was going to work and wouldn't find something new. We always learn.
The most watched programme on the BBC, after the news, is probably 'Doctor Who. ' What has happened is that science fiction has been subsumed into modern literature. There are grandparents out there who speak Klingon, who are quite capable of holding down a job. No one would think twice now about a parallel universe.