In very old texts, sometimes the letter
і is used, but it has been replaced by
и in modern spelling.
I, like many others, learned modern orthography, so I don't understand why sometimes
і is used, sometimes
и. As far as I know, they represent the same phoneme, so I don't see what the motive was for having two separate letters.
Suppose I travel back in time, and need to know when to use which letter. How do I know when to spell
і and when to spell