In 1812, a three-year-old boy in rural France slipped while playing with a leatherworking awl in his father's workshop and lost his sight to infection and sympathetic ophthalmia. That boy, Louis Braille, would later pick up a nearly identical tool, a stylus, and use it to punch the raised-dot alphabet that opened reading and writing to blind people worldwide. This episode traces his journey from Coupvray to the underfunded Royal Institute for Blind Youth in Paris, where he encountered Valentin Hauy's heavy embossed-letter books and a school library of only three volumes.

We look at how Charles Barbier's twelve-dot military night writing sparked Braille's insight, why shrinking the cell to six dots that fit under a single fingertip changed everything, and how sighted teachers responded by banning the system and burning his books. From his mu ...