我将从我的前同事罗伯特·斯特恩伯格那里选择一个定义，他现在是塔夫茨大学的院长，但他在耶鲁大学任教近30年。

I'm going to pick a definition from a former colleague, Robert Sternberg, who is now the dean at Tufts University but was here on our faculty at Yale for nearly thirty years.

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“我不会选择在某一年停止印刷。”他说。

"I wouldn't pick a year to end print," he said.

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作为一名前高中教师，我看到学生们年复一年地选择熟悉的、更便宜的选项。

As a former high school teacher, I saw students choose familiar, cheaper options year after year.

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