It's missing 'since indexes are 0-based, they're offsets".
Edit: if I would make this argument, I'd say the assumption that indexes are offsets is baseless. This is easily proven since there are languages where this isn't true. However I would argue the problem based on practical merits: the reason there no 1-based index op-code exists is because no dominant programming language has 1-based indexing. Which is a self-fulfilling prophesy.
Edit: if I would make this argument, I'd say the assumption that indexes are offsets is baseless. This is easily proven since there are languages where this isn't true. However I would argue the problem based on practical merits: the reason there no 1-based index op-code exists is because no dominant programming language has 1-based indexing. Which is a self-fulfilling prophesy.