an unusually large amount of interest in the subject Not to mention talent in the area. People aren't fungible, especially not later on in their careers. For

an unusually large amount of interest in the subject Not to mention talent in the area. People aren't fungible, especially not later on in their careers. For example, Steve Jobs (pbuh) is not interchangeable with Eric Lander, even though both of them are/were highly creative and driven people who reached amazing success in their field. The kid who's a natural programmer and working on the latest messaging app or Flappy Bird would never have been happy doing bench work to cure cancer.