One can easily conjecture about what the textbook theory leaves out, but it will take more research to sort things out.

我们可以很容易推测出教科书的理论出了什么问题，但事情的本质还需要用更多的研究来发掘。

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Preparing a lecture or drafting a textbook chapter reveals holes in your understanding. And, sometimes, as you try to fill these holes, you get ideas for research.

准备讲座或起草书稿能反映你所知的不足，而有时当你想要弥补这些不足时，往往能获得研究的灵感。

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An additional point: Peter Norvig is Director of Research at Google, author of the leading textbook on artificial intelligence, and may be one of the better programmers alive.

另外一点：Peter Norvig是Google的研发主管，是一本领先的人工智能教材的作者，也许是目前在世的最好的程序员之一。

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Answers to these questions will be provided in late 2013 by a project conducted by UNESCO and the Georg Eckert Institute for International Textbook Research.

UNESCO: EDUCATION

The study, performed in partnership with the Georg Eckert Institute for International Textbook Research, Braunschweig, Germany, will consist of a mapping of Holocaust education in all UNESCO member states, with a view of identifying where and in which contexts the Holocaust is taught.

UNESCO: Education

In 1967, while working for the textbook publisher Science Research Associates, in Palo Alto, Carver met Lish, who was also working at a textbook publishing house.

NEWYORKER: Rough Crossings