I always think it’s nice when a movie lets one engage intellectually as well as emotionally, and having a sound “science story” is a way to help achieve this. I think filmmakers often assume that the science will get in the way of the story they want to tell. But for me it’s just that one has to be creative about the science as well as about everything else in the movie. And, by the way, it’s surely good for the world to educate people a little more about science—and wrapping science in the story of a movie is potentially a great way to do that.