When people are doing something for the right reasons, they try harder.
It's a commonplace now that the kids who were nerds in high school become the cool kids' bosses later on.
But people misunderstand why this happens.
It's not just because the nerds are smarter, but also because they're more earnest.
It's much easier now to make a lot of money by working on something you're interested in than it was 50 years ago.