Nice desconstruction!! I wasn't sure if anyone would take the time to do that. ;)

I think Abigail already answered your question, but no, there's no deep magic going on. Just make sure you don't lose track of which range of values are your values and which range of values are your subscripts. The range operator results in a list of values in either case, it's just a matter of what you do with that list.

-Bird