[BurningFrog]

This is definitely off topic:

I really dislike the latin plural rule, that some misguided but powerful people decided on centuries ago.

"Indexes" is much more natural English than "indices", and we should, when possible, use those those forms.

[adhesive_wombat]

Somehow I recall being told that indexes is the correct plural of the section at the end of a book, and indices is correct for subscripted things in maths and therefore programming.

I don't think a particularly convincing reason was advanced other then "technical things are more Latin-adjacent".