The way I look at it: Your career is time boxed like a baseball game. You only get a few at-bats then you're done. So you can use your chances to swing hard for the home run, or you can go for the safe base hits. But you don't get 100 chances.

Investors on the other hand get thousands of at-bats. They're only limited by the amount of money they want to invest, so they can diversify all they want.