A physicist's (not so) random walk down Wall Street

``This isn't rocket science'' I often hear from Wall Street executives. ``I agree,'' I tell them – ``this is harder than rocket science!'' Join me on a tour of amazing opportunities and crushing failures as I describe how physics and physicists have played the role of both the darling and the devil of Wall Street, and where we go from here. Wall Street and Main Street desperately need physicists working on financial markets, but not the way most people think.