Advance praise for... The only professional guide that tackles the impermanence and built-in obsolescence of trading systems Campaign Trading "John Sweeney will help you overcome the tyranny of one-note trading systems by explaining the secrets of maximum adverse excursion and maximum favorable excursion. Sweeney shows you when to hold' em, and when to fold' em, so you can trade in all types of markets. Now you can trade with the best of them." --...