LOUIS BRAILLE ON CROSSCURRENTS, 1/4: Inventing a code of raised dots that allows those with visual impairment to read and write, Louis Braille was born on this day in 1809. Gavin and Wyatt watch as a reader uses braille code as a portrait of Louis Braille hands on the wall. A visual impairment will not stop you from seeing the results of the Braille birthday special on Crosscurrents, 1/4 at 8 a.m.