I like this PG quote from slide 24 a lot: "One way to design a language is to just write down the program you'd like to be able to write, regardless of

I like this PG quote from slide 24 a lot: "One way to design a language is to just write down the program you'd like to be able to write, regardless of whether there is a compiler that can translate it or hardware that can run it." Test driven really works, even for language development.