Some hypotheses about the evolution of the human brain argue that it is a sexually selected trait, as it would not confer enough fitness in itself relative to its high maintenance costs (a quarter to a fifth of the energy and oxygen consumed by a human).Schillaci, Michael. Sexual Selection and the Evolution of Brain Size in Primates
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John Keating: Language was developed for one endeavor, and that is - Mr. Anderson? Come on, are you a man or an amoeba?La Sociedad de los Poetas Muertos
[pause]
John Keating: Mr. Perry?
Neil: To communicate.
John Keating: No! To woo women!
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La cabeza es un lujo evolutivo, un paréntesis en su frugalidad habitual, un poco como la cola del pavo real, otro poco como que la evolución se fue de copas y en una sola noche se gastó el salario del mes. Ah, pero esa noche de copas nos abre puertas, entre otras cosas.
Y, de ribete:
The present study shows that the largest relative brain sizes among primate species are associated with monogamous mating systems, suggesting primate monogamy may require greater social acuity and abilities of deception.