are you watching it? it started off when he was really little and he realised that he could tell when going along in the car the difference between the buildings and alleys. so he started using a clicking sound and he can locate objects.
TV is like the modern equivalent of a Victorian Freakshow - every time I switch it on recently, there's another shock-doc about a two headed man, a giant toddler or a penis lacerating, man to woman gender reassignment.
Tonight was bat-boy as mentioned above on one channel, sex change shenanigans on another and a wee tiny fella on yet another.
In programme #2, the kid drinks blood and sleeps upside down in his wardobe!
No, it's a good example of how brain-space can be realigned when a faculty is lost. Possibly. I didn't see it. But I know where the telly is.