Why Do Humans See in Color?

"Why do humans see in color?" asks Time magazine. "According to neuroscientist Mark Changizi, who left academia to run a research institute called 2Ai, it’s so that we could read the emotions of others. In his book, Harnessed, published last summer, Changizi described his theory — along with others about how humans developed the basic capacities to think, speak and read. Below, Changizi explains further." Read more.