Twins are not singletons and vice versa. Unless the distinction between twins and singletons is understood in some depth, it is impossible to discuss any questions relating to twins and the transpersonal in a serious manner. This paper provides a guide to the thrust of the argument in terms of the four levels of difference: intergroup; intragroup; interpersonal; and personal. The effects of the varieties of singleton gaze, singleton common sense beliefs, let alone singleton prejudices, on twins in today’s culture will be examined. The voice of ‘the twin’ (singular, plural and representative) is seldom differentiated from the voice of ‘the singleton’. Non-twins clearly lack inside knowledge of what it is like to be a twin. Twins have such inside knowledge. Twins are not singletons and vice versa. Unless the distinction between twins and singletons is understood in some depth, it is impossible to discuss any questions relating to twins and the transpersonal in a serious manner. This paper provides a guide to the thrust of the argument in terms of the four levels of difference: intergroup; intragroup; interpersonal; and personal. The effects of the varieties of singleton gaze, singleton common sense beliefs, let alone singleton prejudices, on twins in today’s culture will be examined. The voice of ‘the twin’ (singular, plural and representative) is seldom differentiated from the voice of ‘the singleton’. Non-twins clearly lack inside knowledge of what it is like to be a twin. Twins have such inside knowledge. Twins are not singletons and vice versa. Unless the distinction between twins and singletons is understood in some depth, it is impossible to discuss any questions relating to twins and the transpersonal in a serious manner. This paper provides a guide to the thrust of the argument in terms of the four levels of difference: intergroup; intragroup; interpersonal; and personal. The effects of the varieties of singleton gaze, singleton common sense beliefs, let alone singleton prejudices, on twins in today’s culture will be examined. The voice of ‘the twin’ (singular, plural and representative) is seldom differentiated from the voice of ‘the singleton’. Non-twins clearly lack inside knowledge of what it is like to be a twin. Twins have such inside knowledge. Twins are not singletons and vice versa. Unless the distinction between twins and singletons is understood in some depth, it is impossible to discuss any questions relating to twins and the transpersonal in a serious manner. This paper provides a guide to the thrust of the argument in terms of the four levels of difference: intergroup; intragroup; interpersonal; and personal. The effects of the varieties of singleton gaze, singleton common sense beliefs, let alone singleton prejudices, on twins in today’s culture will be examined. The voice of ‘the twin’ (singular, plural and representative) is seldom differentiated from the voice of ‘the singleton’. Non-twins clearly lack inside knowledge of what it is like to be a twin. Twins have such inside knowledge.