Purpose
See also: Human skeletal changes due to bipedalismThe brow ridge functions to reinforce the weaker bones of the face in much the same way that the chin of modern humans reinforces their comparatively thin mandibles. This was necessary in pongids and early hominids because of the tremendous strain put on the cranium by their powerful chewing apparatuses, which is best demonstrated by any of the members of the genus Paranthropus. The brow ridge was one of the last traits to be lost in the path to modern humans, and only disappeared with the development of the modern pronounced frontal lobe. This is one of the most salient differences between Homo sapiens and Homo neanderthalensis.
Read more about this topic: Supraorbital Ridge
Famous quotes containing the word purpose:
“I think the worst thing this nation could do for humanity would be to leave any uncertainty as to our will, our purpose and our capacity to carry out our purpose.”
—Hubert H. Humphrey (1911–1978)
“Along the journey we commonly forget its goal. Almost every vocation is chosen and entered upon as a means to a purpose but is ultimately continued as a final purpose in itself. Forgetting our objectives is the most frequent stupidity in which we indulge ourselves.”
—Friedrich Nietzsche (1844–1900)
“I have never doubted your courage and devotion to the cause. But you have just lost a Division, and prima facie the fault is upon you; and while that remains unchanged, for me to put you in command again, is to justly subject me to the charge of having put you there on purpose to have you lose another.”
—Abraham Lincoln (1809–1865)