The Next Perfect Trade articulates a set of principles that can be applied in discovering superior trades; those that will be profitable in the broadest range of economic scenarios. The book shifts focus from forces that drive markets to forces that drive successful trades. The robust performance of this approach has inspired the subtitle A Magic Sword of Necessity.

If you think of investing as a rigorous intellectual battle, you need to prepare for it thoroughly. Get in proper shape. Learn your moves, acquire your armor, your shield, your helmet and your battle horse. A magic weapon will be...