true about the brain thing. we are not the only hominid's in the history of the world. their was once a plant eating higher primate. they walked upright, and wove plant fibers into clothes, they were gatherers, and in fact had crudely cultivated natural territory where they used nuts, roots, berries and friuts, tubers, grass seeds, and honey. they stored food for winter. they did not make it through the last Ice age. starved and were hunted by the more agresive meat eaters.