The point I was trying to make is that if you just learn a little bit of music, a little bit of football, a little bit of french you are still only learning the same and getting the same perspective no matter how many different things you learn.
The trick IMO is to dig deep into something as this will teach you how to dig deep into other things later. I.e. you are actually gaining perspective on other areas even before you learn about them.
By exposing a wide range of activities to kids, they gain breadth. They can then choose what to explore in depth - that is their call.
"Overspecialize, and you breed in weakness. It's slow death."
You can specialize in playing a sweeping technique on your guitar that does not make you a good musician.
And again. No I simply don't believe you gain breadth by being exposed to many different things. It's the other way around. Learning a lot of different things superficially is not going to teach you the real lessons.
It's not about acquiring a specific set of skills it's about acquiring an ability to learn how to learn.