玛丽亚·德鲁伊科娃是“自然数学”的创始人之一，她曾向5岁的儿童教授基础微积分概念。

Maria Droujkova is a founder of Natural Math, and has taught basic calculus concepts to 5-year-olds.

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梅泽尼奇也是假定科学公司的创始人之一。现在里德医院和其他军队用的脑部训练程序之一，就是这家公司提供的。

Merzenich is also a co-founder of Posit Science, a company that makes one of the brain training programs used at Walter Reed and other military.

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根据《连线》杂志创始人之一凯文·凯利的一本书《科技需要什么》，美国的燧石手每年生产超过一百万支新箭头和矛头。

According to What Technology Wants, a book by Kevin Kelly, one of the founders of Wired magazine, America's flintknappers produce over a million new arrow and spear heads every year.

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