"for learning" + "to explore a concept" -> to understand why things are (or were) done a certain way -> to test the boundaries of what's possible Surely no o

"for learning" + "to explore a concept" -> to understand why things are (or were) done a certain way -> to test the boundaries of what's possible Surely no one thinks that current languages are the most efficient or effective possible way of doing things? That we've even come close to enumerating all useful methods of expressing program execution? (Take a look at what Racket is doing for example.)