Pour recadrer le debat et en finir avec les hs:
Lucy n etait qu une race de Singe et non une ancetre des Humains:
There are clues in every hominid skeleton found, but we are still learning how to interpret them. 'Lucy' and her kind, who lived in Africa between 3.6M and 2.9M years ago, are a classic example of the difficulties entailed. "Lucy had a small brain, and a face and teeth which were more like a chimp's than a human's", Robin Crompton explains. "She also had a long trunk, long arms, short legs and grasping toes, whereas humans have short trunks and long legs …
The new models tell us a lot more about the way walking evolved. They confirm that bent-hip, bent-knee walking would have been very expensive for Lucy. "Her body form is designed to give her good static stability", says Robin Crompton. "However, she could also have walked upright, and the models tell us that this would have been fairly energy-efficient.
"Due to their long trunks and short legs, hominids like Lucy would not have been as capable as modern humans - or Homo ergaster, who lived about 1.8 million years ago - when it came to carrying loads on their shoulders or in their hands. Nonetheless, walking erect, Lucy could have hand-carried loads weighing up to 60% of her body weight for less than the cost she would have incurred walking bent-hip, bent-knee but unloaded
