Sacks’ additional understanding through anecdotal evidence supplied by other blind persons

 
In his attempt to acquire knowledge on the blinds’ visual imagery power, Sacks encountered many blind people who provided varying evidence regarding his question. One such person that Sack met is Dennis Shulman, who conceded to have been in the dark world for more than 30 years. Dennis disagrees with Hull’s account of the blind, and he claims to see his wife and children visually in his mind though, in reality, he has never seen them before. He adds that he visualizes himself just as he visualizes his wife and children.

Dennis is a lecturer of Biblical Topics, and despite the notes, he lectures on being Braille, he visualizes them in his mind as real notes. Sacks also interviewed with Arlene Gordon, who is an old woman at the age of seventies. The woman equally disagrees with Hull regarding the loss of the visualizing ability by the blind. Though living in the dark world, Gordon asserts that she visualizes her hands any time she moves them in front of her eyes. Also, the woman claims that she constructs legible sentences in her mind once she listens to book talks. The woman further asserts that she visualizes book talks and translates them into printed form in her mind and read the texts as if she had her sight intact. She adds that her eyes would feel tired if she listened to book talks for a long period, which is an indicator that she visualizes the text. The woman narrates an incident whereby she had visited Venice city with a friend. The woman, though blind, would visualize and see the city in her mind as her companion provided a brief description of the city’s appearance. The testimony by Dennis, coupled with the testimony by Gordon provided Sacks with enough anecdotal evidence to confirm that the blind people in the society live in a visual world.