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Time's Arrow, Time's Cycle: Metaphors for a Period of Transition

In A Child's Garden of Verses, Robert Louis Stevenson describes this couplet as a "Happy Thought." And yet diversity in the fields of natural and social sciences is normally not a source of joy. On the contrary, scientists in both fields are usually not satisfied until they have established some kind of classification, some order out of complexity and confusion. It is an innate desire for systemic closure that can overcome even the strongest natural caution. Thus in 1758, Linnaeus attempted to classify all of life in his Systema Naturae (the "System of Nature").[1] And more recently, one historian concluded that "on March 5, 1953, at approximately 9:30 in the morning, the Cold War ended when Joseph Stalin breathed his last."[2]