Does history justify revolutions? This is an old debate, well illustrated by Luther’s bold break from the Catholic Church versus Erasmus’ plea for patient and orderly reform, or by Charles James Fox’s stand for the French Revolution versus Edmund Burke’s defense of “prescription” and continuity. In some cases outworn and inflexible institutions seem to require violent overthrow, as in Russia in 1917. But in most instances the effects achieved by the revolution would apparently have come without it through the gradual compulsion of economic developments.