If you do not comprehend the type system in your language, your program will be inefficient garbage if it runs at all. This is true in Racket as much as in Go.

If you do not comprehend the type system in your language, your program will be inefficient garbage if it runs at all. This is true in Racket as much as in Go. And Racket's type system (being an expandable, routinely expanded language) is much, much larger.