03 OCT 2013 by ideonexus

 Specialization is the Way to Extinction

Now let us examine more closely what we know scientifically about extinction. At the annual Congress of the American Association for the Advancement of Science, as held approximately ten years ago in Philadelphia, two papers were presented in widely-separated parts of the Congress. One was presented in anthropology and the other in biology, and though the two author-scientists knew nothing of each other's efforts they were closely related. The one in anthropology examined the case histories o...
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Specialization comes at the cost of general adaptability. So when the environment changes, the highly-specialized go extinct.

29 JUN 2011 by ideonexus

 Crying as an Evolutionary Strategy

Crying evolved to serve the infant's purposes: to assure protection, adequate feeding, and nurturing for an organism that cannot care for itself. By definition, crying is designed to elicit a response, to activate emotions, to play on the empathy of another. The "other" is usually the mother or father or a related caretaker. The caretaker has also evolved the sensory mechanism to recognize that infant cries are a signal of unhappiness, and thus be motivated to do something about it. This ki...
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Infants cry to motivate mothers to care for them and to promote continual feeding that prevents the mother from ovulating.