I haven't looked at the code that gets generated by `recur`, but I'm guessing it creates a trampoline, and it looks a bit limiting. (e.g. you can't recur with v

I haven't looked at the code that gets generated by `recur`, but I'm guessing it creates a trampoline, and it looks a bit limiting. (e.g. you can't recur with variadic functions) That said, probably all of the excercises in SICP could be done with `recur` and `loop,` with a few minor changes. Thanks for the tip.