"6" Was this number written by a human or a computer? If you sift through a stream of mumbo jumbo written by a thousand chimps and selectively extract meaning

"6" Was this number written by a human or a computer? If you sift through a stream of mumbo jumbo written by a thousand chimps and selectively extract meaningful words, is it written by chimps or selected by humans. That is just to say, an algorithm can't be "judged" by single outputs, much less output selected by a human.