“No more fiendish punishment could be devised, were such a thing physically possible, than that one should be turned loose in a society and remain absolutely unnoticed by all the members thereof. If no one turned around when we entered, answered when we spoke, or minded what we did, but if every person ‘cut us dead,’ and acted as if we were non-existent things, a kind of rage and impotent despair would long well up in us, from which the cruelest bodily torture would be a relief.” William James, The Principles of Psychology