There is a condition which manifests itself as complete blindness, but if you ask a person to try to guess what's in front of them they usually "guess" correctl

There is a condition which manifests itself as complete blindness, but if you ask a person to try to guess what's in front of them they usually "guess" correctly: https://en.wikipedia.org/wiki/Blindsight https://en.wikipedia.org/wiki/Blindsight