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:
“The purpose of a work of fiction is to appeal to the lingering after-effects in the reader’s mind as differing from, say, the purpose of oratory or philosophy which respectively leave people in a fighting or thoughtful mood.”
—F. Scott Fitzgerald (1896–1940)
“Man, her last work, who seemed so fair,
Such splendid purpose in his eyes,
Who rolled the psalm to wintry skies,
Who built him fanes of fruitless prayer,
Who trusted God was love indeed
And love Creation’s final law—
Though Nature, red in tooth and claw
With ravine, shrieked against his creed—”
—Alfred Tennyson (1809–1892)
“The strongest wind cannot stagger a Spirit; it is a Spirit’s breath. A just man’s purpose cannot be split on any Grampus or material rock, but itself will split rocks till it succeeds.”
—Henry David Thoreau (1817–1862)