-face”), is from about time as Lucy and raises ty t it or and Lucy betugenensis, t to be 6 millionyears old, making it t  found—but only for a brief  of C  bones) found a  7 million years old,  it   an early ape andtures and quite primitivebut t, and t.

    Bipedalism is a demanding and risky strategy. It means refaso a fullload-bearing instrument. to preserve trengt becomparatively narro immediate consequences and one longer-term one. First, it means a lot of pain for any birtly increased dangerof fatality to moto get tig must be born ill small—and  care, wurn implies solid male–female bonding.

    All tic enougellectual master of t, but  t have been enormous.

    3Absolute brain size does not tell you everytimes even mucs and  rouble outting tract negotiations. It isrelative size t matters, a point t is often overlooked. As Gould notes, A. africanus imeters, smaller t of a gorilla. But a typical africanus male  at 600 pounds (Gould pp. 181-83).

    So  of ts? Probablyt ters fromto tlantic, diverting s aic and leading tot of an exceedingly situdes. In Africa, turning jungle into savanna. “It  somuc Lucy and  ts,” Joten, “but t tsleft them.”

    But stepping out onto t t ter, but could also be seen better. Even no preposterously vulnerable in to name is stronger, faster, and toottack, modern ages. e rategies, ands. e are turet can  a distance. e can to be physically vulnerable.

    All ts o ion of a potentbrain, and yet t seems not to ralopit all. t gro t to