"There is a kind of a cascading chain, ... If one can't sell, then that business doesn't buy and that means the next business doesn't sell, and the previous business doesn't sell, and so on."

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The movements of nature are in a never ending circle. The animal species which has once been put into a train of motion, is still probably moving in that train. For if one link in nature's chain might be lost, another and another might be lost, till this whole system of things should evanish by piece-meal; a conclusion not warranted by the local disappearance of one or two species of animals, and opposed by the thousands and thousands of instances of the renovating power constantly exercised by nature for the reproduction of all her subjects, animal, vegetable, and mineral.

— Thomas Jefferson