Ultimately, it comes down to taste. It comes down to trying to expose yourself to the best things that humans have done and then try to bring those things into what you're doing. Picasso had a saying: good artists copy, great artists steal. And we have always been shameless about stealing great ideas, and I think part of what made the Macintosh great was that the people working on it were musicians and poets and artists and zoologists and historians who also happened to be the best computer scientists in the world.