Father would calculate lengthy and complex figures in his head while his friends struggled to catch up to the math whiz with their calculators.
父亲会在他的脑子里计算这些冗长的、复杂的数字，而他的朋友们却在拼命地按着计算器，试图赶上这位数学天才的速度。
The authors explain it this way: Calculators are great tools, but they don't turn us into math geniuses.
研究人员这样解释，计算机是伟大的工具，但他们并没有使我们变成数字基因人。
Humans are not walking calculators, we're often impulsive, lazy, biased, and terrible at math.
人类不是会走路的计算机，而是经常会冲动，懒惰，偏心以及对数学一塌糊涂的动物。
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