A scientific tale of two dresses

“Why do some people love cilantro and others say it tastes like soap? Why do some people have perfect pitch and others are tone deaf? It’s the same with vision — our sensory apparatus is fine tuned,” says Dr. Julia Haller, the Opthalmologist-in-Chief at Wills Eye Hospital in Philadelphia.

“She’s looking at me right now like I’m nuts,” Haller says. “She says, ‘How could you possibly see it that way?'”

CNN