Well the same article also claims zero false positives for "a collection of adult pornography." I don't know if the size of that collection is mentioned anywhe

Well the same article also claims zero false positives for "a collection of adult pornography." I don't know if the size of that collection is mentioned anywhere. Anyway, I suspect that the algo is more likely to pick defining features of the scene and overall composition (furniture, horizon, lighting, position & shape of subject and other objects) more than the subject matter itself.