Comment by ozim

I think no one was writing about ones who master specific language.

There is a lot of people who learn just a surface without going deep into tool and think they know enough.

For me it seems that someone who would really go deep into learning language would get most of theoretical stuff on the way. Because there is no way to really master C++ or really master Java without learning about data structures and all kinds of "meta-level" concepts.

Maybe the difference is mostly approach to learning more practical/more theoretical.