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“Most of the calories that men in these societies provision come from hunting or fishing. So in many hunter-gatherer groups it's not unusual for men to contribute up to 90 percent or more of the protein eaten by their families and band. These valuable nutrients and fat, however, come from vertebrate meat. And hunting requires many years of investment to master; even then, return rates are often low and quite variable. among contemporary foraging groups, vertebrate meat can range from anywhere between 30 percent and 80 percent of the diet. So women's work is extremely important since women extract more constant and predictable food resources, including roots, nuts, seeds, invertebrate meat, and plant fibers that require a large amount of effort to process. Therefore, both sexes depend very much on one another to divide their labor between the staples needed to survive and the high-value nutrients required to thrive.”

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Book:Our Political Nature: The Evolutionary Origins of What Divides Us
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“What is guilt? People feel guilty when they think they have acted immorally or have hurt someone and worry that they may lose that person's favor. Guilt motivates a child to behave better toward a parent for fear of losing the parent's love. Like fear, guilt also has a maladaptive sibling, whose name is depression. Depression occurs when a person attributes guilt to him or herself and perceives it as a permanent condition, as opposed to being situational and absolvable.”

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Book:Our Political Nature: The Evolutionary Origins of What Divides Us
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“The proportion of the brain occupied by the prefrontal cortex is larger in human than in any other species, reflecting our advanced ability to make long-term rational decisions. Unlike most regions of the brain, the prefrontal cortex continues to grow and develop well into the mid-twenties --and so do its cautionary functions.”

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Book:Our Political Nature: The Evolutionary Origins of What Divides Us
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“What accounts for this great diversity running through our veins? The struggle for survival entails not only the competition for resources and mates but also the battle against pathogens. In this immunological arms race, the blood group antigens of human populations have coevolved with a microscopic world of enemies (as well as allies and neutral parties). Natural selection shapes the human immune system by favoring the configurations best adapted to a population's environment.”

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Book:Our Political Nature: The Evolutionary Origins of What Divides Us
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“According to Transparency International's 2010 Corruption Perceptions Index, Chavez's Bolivarian revolution created a country that ranked 164th out of the 178 nations surveyed -placing Venezuela below Haiti in perceptions of corruption. Unfairness in the Venezuelan public sector was at the level of Congo, Guinea, and Kyrgyzstan. Unfairness, of course, is the precise opposite of equality.”

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Book:Our Political Nature: The Evolutionary Origins of What Divides Us
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“...politics isn't -just about money-, but also about who gains authority over a population's minds and bodies. Controlling education, healthcare, economic policies, and morally controversial laws can influence how people recombine and transmit DNA in various ways, at different rates, and to what consequence. The rise of power of political extremists greatly magnifies this control over both genetic and economic resources.”

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Book:Our Political Nature: The Evolutionary Origins of What Divides Us
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“Because leftists are more likely to believe in the innate, inner quality of all people, they attribute the world's inequalities to outer, structural injustices. In particular, the left sees many power hierarchies as unmerited and exploitative. Leftist morality is rooted in the imperative to equalize, to various extents, discrepancies in power (especially through education). Compared with conservatives, leftists have a lower tolerance for inequality. In this leftist worldview, evil comes primarily from undeserved inequalities in strength or power: from capitalists who exploit workers, unscrupulous corporations that deceive consumers, colonialists who leach off third-world countries, soldiers and police who abuse civilians, men who mistreat women, humans who disrespect the animals and plants in their environment, and so on.”

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Book:Our Political Nature: The Evolutionary Origins of What Divides Us
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“The Biology of Tribalism concerns pushes and pulls between populations, which primarily occur due to tradeoffs between inbreeding and outbreeding. Ethnocentrism and other tribalistic personality facets have evolved to influence mate choice and encourage “optimal outbreeding.” The book will explore these and other tribalistic political phenomena that impact the evolution of populations, including gender inequality, warfare, and genocide. The Biology of Family Conflict (Parent-Offspring Conflict) is the field of evolutionary theory that explains why the interests of the most closely related individuals do not always align, and thus why different family disciplinary strategies exist. The two opposed disciplinary models are based on egalitarian and hierarchical moralities. These conflicts are linked to the variation in people's tolerance of inequality. The Biology of Altruism and Self-Interest is the area of evolutionary theory that describes how and why people cooperate with and betray one another; this field sheds light on why some people perceive human nature so differently than others.”

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Book:Our Political Nature: The Evolutionary Origins of What Divides Us
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