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 That Cries The Eye That Cries The Eye that Cries ("El Ojo que Llora" in Spanish) is a memorial that was born as a private initiative designed to honor the thousands of victims as a result of terrorism in Peru, to strengthen the collective memory of all Peruvians and to promote peace and reconciliation in the country. The Eye that Cries is part of a larger project called The Memory Alameda which will incorporate other art pieces, large extensions of green areas and the Museum of Memory (Yuyanapaq). The memorial, The Eye That Cries, located in Campo de Marte, a park in