No one can anticipate everything that might happen. Sensing possibilities, though, is better than having no sense at all of what to expect. Sun Tzu seeks sense—even common sense—by tethering principles, which are few, to practices, which are many. He fits the mix to the moment, as if setting sound levels on a synthesizer, or color combinations on a computer screen. He leaves enough options to satisfy any fox, while retaining the purposefulness of a hedgehog. He keeps opposing ideas in his mind by projecting them across time, space, and scale.
