Originally Posted by Superluminal

Humans do not have echo location. Dolphins, among other sea mammals, have a sensory organ that they use for echo location, which is basically sonar. Most humans that lose one of there senses, such as sight, rely on one of the other five to get them by. This allows them to have acute abilities in one sensory area, where the other might be lacking. For most blind people, this is usually hearing. Even so, you cannot use echo location to play a video game. It doesn't work that way. Echo location works by sending pulses of low wavelength noise that bounce off objects and allow a dolphin to generate a depiction of the distance of the object. On a TV screen, the objects are not real; so there is no way he could be using echo location in that case. This is nothing more than a blind individual who has mastered his surroundings, and overcome the challenges of his daily life.