"But one of the reasons is that the physicists have an advantage
  that no other branch of sciences has. If something gets too
  complicated, they hand it to someone else. If a molecule is too
  big, you give it to the chemists. The chemists, for them, if the
  molecule is too big or the system gets too big, you give it to
  the biologists. And if it gets too big for them, they give it to
  the psychologists, and finally it ends up in the hands of the
  literary critic, and so on. " -Noah Chomsky