"nonlinear interactions almost always make the behavior of the aggregate more complicated than would be predicted by summing or averaging."

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I have find that today's students are often more tolerant of human variance than students in earlier generations might have been. On the other hand, some of our students need much more interaction with a wide variety of peers so they level of understanding deepens and so they are prepared to live in a world that is only going to get smaller.

— Carol Ann Tomlinson