What's with people using the number "0" for their first reference? I have only ever seen that practice here at Hacker News.
Lots of (most?) programming languages are 0-indexed so it feels natural for software developers and our ilk.
Hey everyone! I found the COBOL developer!
See https://en.wikipedia.org/wiki/Zero-based_numbering, e.g. “computer programmers might use zeroth in situations where others might use first”.