The earth-centered cosmos died in the seventeenth-century, witch burning in the eighteenth, and bloodletting by leeches and belief in spontaneous generation in the nineteenth, while ice-pick lobotomists won Nobel Prizes in the twentieth. Each age is confident it has reached the end of historical development, but each generation’s ignorance is pitied condescendingly scant decades later. Which of our age’s paradigms about human nature, educational psychology, economic systems, medical practice, and political theory will embarrass our grandchildren?
