[LightMachine]

I sort of agree, but it still amazes me that it can get the code is correct, even though I asked for a highly specific style (i.e., use of recursion, representing "None" as null, the format of the JSON, making local functions, etc.). So, even thought it has never seen that exact implementation, it still assembles a working function that just works. If it was just mixing up different code it recalled from memory, it would likely have a bunch of silly errors here and there that I'd have to fix manually, but no, it just works. That's what impressed me.