Why there is often no Row I in movie theatres

I have often wondered why there is often no row I in movie theaters. I wondered if this was tradition, superstition (like skipping the 13th floor in a building), or something else. My theory was that it is because the letter ‘I’ resembles the number ‘1’. I suppose that could lead to confusion and may warrant skipping row I.

I didn’t think that confusion was very likely so I Googled for a better explanation. There isn’t one. After quite a lot of scratching around it seems that possible confusion with ‘1’ is the reason for skipping row I. Apparently many theatres also skip row O and/or row Q because they resemble each other and the number 0.