Phantom limb pain is one of the most intractable and merciless pains ever known—a pain that haunts appendages that do not physically exist, often persisting with uncanny realness long after fleshy limbs have been traumatically, surgically, or congenitally lost. The very existence and “naturalness” of this pain has been instrumental in modern science’s ability to create prosthetic technologies that many feel have transformative, self-actualizing, and even...
