Researchers teach computers to see optical illusions. By making a neural-network computer model that can be fooled by optical illusions like humans, the researchers advanced knowledge of the human visual system and may help improve artificial vision. Source 2b.
Well, that's one small step ahead to artificial intelligence; at least the sentient kind. The mind wonders on a lot of things, especially when focus is involved. But with computers, it's just simple mathematics without being fooled.