This “parental investment theory” should apply especially well to humans.

这种“亲代投入理论”尤其可以很好地解释人类行为。

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It implies huge parental investment in the offspring since, if you lose it, you lose everything.

这意味着父母对后代的巨大投入，因为如果失去后代，你就失去了一切。

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The scientists concluded that when it comes to settling down, women want a male who is the best parental investment. But when the biological bells are ringing, they want Tarzan's genes.

科学家们得出的结论是，处于激素稳定期的女性想要一个最适合做父亲的男人；而当那个生物钟敲响之时，女人想要的则是人猿泰山般的基因。

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Labour leader Ed Miliband said his party would support measures such as parental leave and a Green Investment Bank - but the Queen's Speech contained nothing for the young unemployed, working families and "millions of people who don't think the government is on their side".

BBC: UK Politics

Progressives who support the right of fifteen year old girls to make decisions about abortion without parental notification do not trust these same girls later in life to make their own investment choices with their Social Security funds.

FORBES: Are Progressives Too Conservative to Accept Capitalism?