> we can talk about a_3 by calling it the third term It's still the "third" term. People commonly refer to the "zeroeth" term in a list as the "first" term, th

> we can talk about a_3 by calling it the third term It's still the "third" term. People commonly refer to the "zeroeth" term in a list as the "first" term, the "first" term as the "second", and so on. Admittedly, the usefulness of "zeroeth" depends on how often you think about the mechanics of array traversal, and that's probably not often if you don't program computers.