so it's hot code reloading on steroids? really neat idea, I'm working on a similar Lisp-style language and will probably adopt this idea (and cite you of course). In my language, you can redefine any symbol, even numbers, so (def 10 12) is valid code (so is (def def 42), which breaks `def`!).

I wonder what use cases there are for such extreme flexibility, aside from funs and games!