I'm not "explaining your reasoning" because I don't agree with a single work you just said. > In math when there are semantics, the indices usually include 0

I'm not "explaining your reasoning" because I don't agree with a single work you just said. > In math when there are semantics, the indices usually include 0 Complete nonsense. For example, in a Laurent expansion you start in the negatives and go up. Now you're gonna say "but that's an exception, I said _usually_". But it's not, this is the general case.