What People Cured Of Blindness See

A 17th-century thought experiment asks “about a person, blind from birth, who could tell apart a cube and a sphere by touch: If his vision were restored and he was presented with the same cube and sphere, would he be able to tell which was which by sight alone?” Dr. Pawan Sinha, who has organized sight-restoring surgery for hundreds of blind children in India, has an answer.