 The senses design beyond vision. Synesthetic Calculus 2012 People with synesthesia connect letters to sounds or colors. In this video, numbers in various colors react to footsteps, train windows, and urban space. David Genko, 32 seconds, with audio description. White 3s, orange 4s, tiny white 6s, white 5s, tiny white 6s, yellow 9s, yellow 1s, yellow 8s, white 5s, yellow 8s, tiny white 6s, white 9s, white 3s, red 5s, white 3s, and white 6s. The senses design beyond vision.