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 Mind's Eye & Mission of the Viyrans The Mind's Eye & Mission of the Viyrans The Mind's Eye is a Big Finish Productions audio drama based on the long-running British science fiction television series "Doctor Who". It is a three-part story written by Colin Brake and was released alongside a one-part story, "Mission of the Viyrans". The Doctor, Erimem and Peri have gone their separate ways. The Doctor is wandering on a nameless paradise planet filled with murderous primates (but only at night) and carnivorous plants. Erimem is the Queen of a space colony empire, New Cairo, and is suffering a rebellion, while Peri's stepson and new