The Human Eye: A Double Standard?

[Alex K]

Oh, boy... am I gonna get a beating....

Then u r doing patriarchy rong

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Is that for realsies?

I have often wondered the same thing, about childbirth being so ridiculous for humans.

http://ngm.nationalgeographic.com/print/...erman-text

A hundred years ago, childbirth was a leading cause of death for women of childbearing age.

Why do we possess a birth canal of such Byzantine design? "The human female pelvis is a classic example of evolutionary compromise," Rosenberg answers. Its design reflects a trade-off between the demand for a skeletal structure that allows for habitual walking on two feet and one that permits the passage of a baby with a big brain and wide shoulders. Its unique features didn't come about all at once, but at different times in our evolutionary history, in response to different selective pressures. "The result of these different pressures is a jerry-rigged, unsatisfactory structure," Rosenberg says. "It works, but only marginally. It's definitely not the type of system you would invent if you were designing it. But evolution is clearly a tinkerer, not an engineer; it has to work with yesterday's model."