Ever wonder why you don't walk into walls or off cliffs? How you decide if you can drive through a snowstorm? How high you are willing to climb up a ladder to change a lightbulb? Through the prisms of behavioral neurology and cognitive neuroscience, Scott Grafton brilliantly accounts for the design and workings of the action-oriented brain in synchronicity with the body in the natural world, and he shows how physical intelligence is inherent in all of us--and always in problem-solving mode. Drawing on insights gleaned from discoveries by engineers who have learned to emulate the sophisticated solutions Mother Nature has created for managing complex behavior, Grafton also demonstrates the relevance of physical intelligence with examples that each of us might face--whether the situation is mundane, exceptional, extreme, or compromised.