The history of war is filled with examples of soldiers who, in the heat of battle, fail to register the full extent of their injuries. In fact, some of our oldest accounts of battle seem devoid of pain’s emotional context. For humans possess two systems of pain: sensory pain and conscious pain. Join Robert Lamb and Joe McCormick for a discussion that spans the battlefields of human history and future, invoking everything from the bicameral mind to current neuroscience.