The essence of my comment was meant to emphasize that going outside one's comfort zone very often requires some leap of faith. I'm not advocating learning only

The essence of my comment was meant to emphasize that going outside one's comfort zone very often requires some leap of faith. I'm not advocating learning only one thing and spending your life on that-- on the contrary, I'm saying if there's a subject you're not interested in (eg.: chemistry, accounting, actuarial science, invertebrate biology, whatever), it's probably because you don't know enough about it. The people who do know about topic X, do see its applications. There's almost always more to gain from learning a different thing than we tend to believe at the onset.