Once, I encountered the funny story of an AI image descriptor with a sheep obsession. It had been trained on pictures of fields of sheep. Therefore, it tagged anything in a field as ‘sheep’, including an empty field, because they work on statistical probability. Therefore, it thinks “ah, a field! there’s probably a sheep here.” (It’s a bit more complicated but basically that.) It also couldn’t recognise sheep in places that weren’t fields, such as petrol stations or barns. [cont]