"Orchids were not made by an ideal engineer; they are jury-rigged from a limited set of available components."
"Organisms are not billiard balls, propelled by simple and measurable external forces to predictable new positions on life's pool table. Sufficiently complex systems have greater richness. Organisms have a history that constrains their future in myriad, subtle ways."
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Source: Stephen Jay Gould (2010). “The Panda's Thumb: More Reflections in Natural History”, p.16, W. W. Norton & Company
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