History
The index was introduced by Raymond Pearl in 1933. It has remained popular for over seventy years, in large part because of the simplicity of the calculation.
Read more about this topic: Pearl Index
Famous quotes containing the word history:
“The principle that human nature, in its psychological aspects, is nothing more than a product of history and given social relations removes all barriers to coercion and manipulation by the powerful.”
—Noam Chomsky (b. 1928)
“Regarding History as the slaughter-bench at which the happiness of peoples, the wisdom of States, and the virtue of individuals have been victimized—the question involuntarily arises—to what principle, to what final aim these enormous sacrifices have been offered.”
—Georg Wilhelm Friedrich Hegel (1770–1831)
“Universal history is the history of a few metaphors.”
—Jorge Luis Borges (1899–1986)