Cooperative eye hypothesis Cooperative eye hypothesis The cooperative eye hypothesis is a proposed explanation for the appearance of the human eye. It suggests that the eye's distinctive visible characteristics evolved to make it easier for humans to follow another's gaze while communicating or while working together on tasks. Unlike other primates, human beings have eyes with a distinct colour contrast between the white sclera, the coloured iris, and the black pupil. This is due to a lack of pigment in the sclera. Other primates have pigmented sclerae that are brown or dark in colour. There is also a higher contrast between human skin,
The Eye of the Heron context of her development as a writer: "The Eye of the Heron" contains the phrase: "A beginning place". Le Guin reused this phrase in the title of her 1980 novel "The Beginning Place". The Eye of the Heron The Eye of the Heron is a 1978 science fiction novel by American author Ursula K. Le Guin which was first published in the science fiction anthology "Millennial Women". "The Eye of the Heron" is a science fiction novel set on the fictional planet of Victoria in a speculative future, probably sometime in the 22nd century, when the planet has been colonized