AI run on statistical probability. The more options there are in something, the harder it is to get right. A clock face becomes hard because practically the entire clock changes from moment to moment, and logos on shirts are similar in that they’re largely all in the same place but vary dramatically in shape to be as distinct from each other as possible, which is basically the exact opposite of what an AI wants. When your whole thing is basically averaging stuff out on a probability curve that’s weighted towards specific keywords, having massive variation in your data points is bad.