Seeing Is Believing, Or Is It?

Prisma-lightSpectrum-goetheWith my grandparents living in Missouri, the “Show Me State” motto was always familiar to me as a child. The notion from that motto that seeing the world is how you know the world became more complicated when I met my wife. She sees the world differently from me, noticing differences in colors that look the same to me, differences that I have neither perception of nor words to describe. If seeing is believing, whose vision (perception) should I believe?

The issue of perception of color has come into the foreground after the sensation that was Dressgate. In one segment of a Radiolab podcast on color from several years ago (embedded below) that suddenly became popular, they compared the number of different color perceiving cones in the eyes of different animals (beginning about 9:30 in the podcast). Dogs have two, humans three, butterflies five, and mantis shrimp top the list with sixteen. Continue reading “Seeing Is Believing, Or Is It?”