" but doing something ambitious in a language you don't really know " I never really implied "language you don't know". My advice was "use a language you know

" but doing something ambitious in a language you don't really know " I never really implied "language you don't know". My advice was "use a language you know and build something ambitious" (vs trying to find the ultimate "cool" language). I'll edit. "Building something and learning from your mistakes is indeed the best way to learn," This is what I was trying to say, (with "something" != tiny programs). I know many people who "know" many languages(and try to know more) but haven't built anything substantial with any of them.