Human brains tend to dwell on negative events.

人类的大脑倾向于专注负面事件。

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Human brains come equipped with certain quantitative instincts that are refined with age, but these instincts are very limited.

随着年龄的增长，人类的大脑具有了一定的数量本能，但这种本能是非常有限的。

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There is another difference between human brains and computers.

人脑和电脑还有另一个区别。

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Why not just put our own orgasmitron hat on with a little-- not rat lever, but now human lever-- with the electrodes stimulating our own brains so that we get this intense burst of pleasure?

我们为何不带上电子高潮帽-,把老鼠杠杆变成人类杠杆-,用电极刺激我们的大脑,获得强烈的快感？

耶鲁公开课 - 死亡课程节选

Right now, says Mr. Kurzweil, our human brains consist of 300 million "pattern recognition" modules.

WSJ: The Weekend Interview: Will Google's Ray Kurzweil Live Forever?

Dr Gross, a surgeon, is already skilled at implanting stimulating electrodes into human brains.

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It is a lot easier to experiment with computer programs than with human brains.

ECONOMIST: Machine vision