Risking the ridicule of the populace, they take to the streets, publicly asserting their dogma and seeking converts with a fervor that is intensified, not diminished, by the clear disconfirmation of a central belief. So it was with the Montanists of second-century Turkey, with the Anabaptists of sixteenth-century Holland, with the Sabbataists of seventeenth-century Izmir, with the Millerites of nineteenth-century America. And, thought a trio of interested social scientists, so it might be with a doomsday cult based in modern-day Chicago.

