Is it better to know a little about many subjects than to know a lot about one subject?

It's better to know a little about many subjects than know a lot about one subject because it's easier to learn more about a subject when you already know a little bit about it. It's a lot harder to learn a subject when you know absolutely nothing about it. It's also better to know a little about many subjects that a lot on one subject because chances are you will need to know more than just one subject to get far in life so it wouldn't do you any good to know just one subject.