about autistic savants. Dr. Sacks meets twin brothers who can neither read nor perform multiplication, yet are playing a "game" of finding very large prime numbers. While the twins were able to spontaneously generate these numbers, from six to twenty digits, Sacks had to resort to a book of prime numbers to join in with them. The twins also instantly count 111 dropped matches, simultaneously remarking that 111 is three 37s. This story has been questioned by Makoto Yamaguchi, who doubts that a book of large prime numbers could exist as described, and points out that reliable scientific reports only support approximate perception when rapidly counting large numbers of items. Autistic savant Daniel Tammet points out that the twins provided the matchbox and may have counted its contents beforehand, noting that he finds the value of 111 to be "particularly beautiful and matchstick-like". "Eyes Right", about a woman in her sixties who has hemispatial neglect. She completely forgets the idea of "left" relative to her own body and the world around her. When nurses place food or drink on her left side, she fails to recognize that they are there. Dr. Sacks attempts to show the patient the left side of her body using a video screen setup; when the patient sees the left side of her body, on her right, she is overwhelmed with anxiety and asks for it to stop. "The Dog Beneath the Skin", concerning a 22-year-old medical student, "Stephen D.", who, after a night under the influence of amphetamines, cocaine, and PCP, wakes to find he has a tremendously heightened sense of smell. Sacks would reveal many years later that he, in fact, was Stephen D. "The Autist Artist", about a 21-year-old named Jose who had been deemed "hopelessly retarded" and had seizures; however, when given Sacks' pocket watch and asked to draw it, he composed himself and drew the watch in surprising detail. In popular culture Christopher Rawlence wrote the libretto for a chamber opera—directed by Michael Morris with music by Michael Nyman—based on the title story. The Man Who Mistook His Wife for a Hat was first produced by the Institute of Contemporary Arts in London in 1986. A television version of the opera was subsequently broadcast in the UK. Peter Brook adapted Sacks's book into an acclaimed theatrical production, L'Homme Qui..., which premiered at the Théâtre des Bouffes du Nord, Paris, in 1993.