I interpreted the 0 as meaning “so trivial as to perhaps not be worth it, and therefore optional” – you can start at item 1 if you want. Or perhaps it meant “to

I interpreted the 0 as meaning “so trivial as to perhaps not be worth it, and therefore optional” – you can start at item 1 if you want. Or perhaps it meant “too obvious to mention, but mentioning it just in case”.