Mark Whitehouse writing in the Wall Street Journal:

Physicist Doyne Farmer thinks we should analyze the economy the way we do epidemics and traffic.

Psychoanalyst David Tuckett believes the key to markets' gyrations can be found in the works of Sigmund Freud.

Economist Roman Frydman thinks we can never forecast the economy with any accuracy.

Disparate as their ideas may seem, all three are grappling with a riddle that they hope will catalyze a revolution in economics: How can we understand a world that has proven far more complex than the most advanced economic models assumed?