algorithmic modeling for Rhino
Welcome to the Computer Age, basically. All lists in Grasshopper and in nearly all programming languages start with index item zero. But your question seems to be a typo, since it asks why doesn't it start at zero, when zero is right there. The divide command accepts a normal 3 since that's not an indexing number but an actual number of divisions.
Now why the points are not in useful order, that's just Grasshopper, and possibly Rhinocommon underneath it, not being friendly so you save a millisecond. Usually I spend 90% of my development effort trial and error working around such raw behavior.
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