Upright Posture: The Primary Categorical Human Trait
This blog maintains that upright posture is the sine qua non human trait because: 1) humanity is defined by a shift to collective functioning; 2) collective function requires a “public” communication system to coordinate the behavior of individuals; and 3) upright posture enabled the face-and-upper-body to become the instruments of the simultaneous-and-continuous communication that is the heart of the capacity of individuals to coordinate their behavior.
TEAMWORK IS THE CRUCIAL HUMAN ADAPTATION.
This week’s Science reported a paper in Nature in which a thigh bone is thought to indicate that Sahelanthropus tchadensis, the oldest hominin fossil at 7 million years, waked with upright posture.
