They are well versed in the pattern, not just characters. So they can tell you that this is a picture showing a man or woman, or this picture shows a person xy. Please note that they do not give an exact answer, but only the probability. Also signal patterns such as audio signals. For example, sound x sounds like sound y, etc.
They cannot tell you what the answer is - this is the xy formula, because small changes in the formula can give a completely different answer.
source share