Night writing visited the National Institute for the Blind in Paris, France, where he met Louis Braille. Braille identified the major failing of the code, which was that the human finger could not encompass the whole symbol without moving and so could not move rapidly from one symbol to another. His modification was to use a six-dot cell, the Braille system that revolutionized written communication for the visually impaired. Night writing Night writing, a.k.a. sonography, was a system of code that used symbols of twelve dots arranged as two columns of six dots embossed on a square of paperboard, and is now
Dot Cotton she isn't scared of Halloween but of the world. Dot reveals that she thinks she is going blind but then kicks Patrick out of the house. When he leaves, it is revealed that Dot cannot see anything clearly. Patrick books Dot a doctor's appointment; the doctor suspects age-related macular degeneration, which is later confirmed. Dot starts treatment but she is annoyed that her eyesight does not improve much. She turns down Ronnie's offer of paying for surgery to permanently fix her sight. Abi invites Dot to Christmas in Exeter but Dot insists she has plans of her own. The launderette