50 percentlarger t of Lucy in gross terms and not mucionally, so it ein of its day. No persuasive reason o groime it big brainsand uprigly related—t t out of ts necessitatedcunning nerategies t fed off of or promoted braininess—so it er ted discoveries of so many bipedal dullards, to realize t t connection bet all.
“to explain attersall. of t devour 20 percent of its energy. tively picky in , your brain complainbecause it toucuff. It s glucose instead, and lots of it, even if it means s-ces: “tant danger of beingdepleted by a greedy brain, but cannot afford to let t o death.” A big brain needs more food and more food means increased risk.
tattersall tionary accident. ep if you replayed tape of life—even if you ran it backonly a relatively s o te unlikely” tmodern hem would be here now.
“One of t ideas for o accept,” tion of anytable about our being is part of ourvanity as end to tion as a process t, in effect, o produce us. Even ants tended to t up until tly as 1991, in textbook tages of Evolution, C.
Loring Brace stuck doggedly to t, ackno one evolutionary deadend, t australopited a straigon of development so far, t on to a younger, fres seems certain t many of trails t didn’t come to anything.
Luckily for us, one did—a group of tool users, of no, it existed from about 1.8 million years ago to possibly as recently as ty thousandor so years ago.
According to tus is tcame before er; everyt came after to , t to use fire, t to fasools, t toleave evidence of campsites, t to look after tus remely smembers long-limbed and lean, very strong (mucronger telligence to spread successfully over o otus must errifyingly po, and gifted.
Erectus or of its day,” according to Alan alker of Penn StateUniversity and one of ties. If you o look one in tmigo be “you connect. You’d be prey.”
According to alker, it the brain of a baby.
Altus for almost a century it tered fragments—not enougo come even close to m