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There are two kinds of experts: academic experts and practical experts. One is not better than the other, but they are very different, and each offers very different value.

"Two Types of Experts" by Simon Sinek, www.huffingtonpost.com. March 18, 2010.
There are two kinds of experts: academic experts and practical experts. One is not better than the other, but they are very different, and each offers very different value.