I love this insight from Slate‘s interview today with Noam Chomsky:
Q: In your new book, you suggest that many components of human nature are just too complicated to be really researchable.
A: That’s a pretty normal phenomenon. Take, say, physics, which restricts itself to extremely simple questions. If a molecule becomes too complex, they hand it over to the chemists. If it becomes too complex for them, they hand it to biologists. And if the system is too complex for them, they hand it to psychologists … and so on until it ends up in the hands of historians or novelists. As you deal with more and more complex systems, it becomes harder and harder to find deep and interesting properties.