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by 323 1190 days ago
The number 4 (palm fingers) is very precise. You can't have 3 or 5. But you can have a variable number of stripes in tiger coat for example. It's difficult for AI to pickup that they need exactly 4.

The fingers themselves are also almost identical, but not really. If you learn a "platonic finger" it's not good enough, you should learn each finger individually. There is only so much you can spend on them, you got a million other things to learn. And the raters of the model are much more likely to penalize a bad face than some off details in a hand.