[bpodgursky]

You can't just "test" a neural network like that. For all you know they tested a thousand pictures of Chimpanzees and Gorillas against the network, but for some reason the NN decided to classify the photo differently because the subject was standing in front of the wrong kind of tree or wearing a funny-colored hat.

There's no super reliable way to prevent this (with current tech) other than forbidding that output entirely.