in school they always say use good variable names and it makes sense but i have to ask why is "i" the standard name for a counting variable?

i know when there was hardly any ram using a one letter variable made sense along with 20000000000 pages of goto but years later we use good names for everything but that for loop it still has i lol is there some reason to this madness that i missed???

oh well i was jsut curious since its kind of odd we use good names for everything BUT that.