Why is it that the same teams seem to dominate March Madness, the annual NCAA men's collegiate basketball tournament? For that matter, why does the same small group of institutions seem to top annual best-college rankings? According to a theory developed by a Duke University engineer, these hierarchies are not only natural, but predictable.
Just as continually growing streams flow into a larger river, or smaller and smaller branches grow out from a single tree trunk, examples of these hierarchies abound in the natural world. Whether it is a river or basketball rankings, there can only be a few at the "top" of the hierarchy, while there are many below. Once this pattern is established, like a river digging a wider and deeper bed over time, it is difficult to change it, said Adrian Bejan, engineering professor at Duke's Pratt School of Engineering.
These hierarchies can be predicted by the constructal law, which Bejan developed 15 years ago and has be...
Original Story:
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Original Story:
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