Comment by ofalkaed

>They are a relic of C style arrays

Doesn't it predate that by a good amount? I would think it is a relic of the EEs who built the digital world, those early languages show a great deal more relation to the bare metal than modern languages. Creating an array whose index starts at 1 just doesn't make sense from the discrete logic point of view, you are either wasting an element or adding in an extra step.

But in this day and age how can a language not have ⎕IO ← 0?