translation.en: Now it's my theory, supported only by anecdotal, personal anecdotal evidence, but nonetheless, that kids get interested in something between the ages of eight and 11. You've got to get them there.
translation.zh: 这只是我的理论，只有一些传闻 能够证明，但尽管如此 孩子们在8到11岁的时候的确很容易对事物感兴趣 你一定要把握这一点