The question of whether a robot can communicate with human beings evokes another question: How can human beings have the feeling that they are usually successful in mutual communication? This question may be answered because the emergence of the mind of individuals and ‘the mind of community’ are not completely separable. The mind of the community may precede the mind of the individual in society. Complex mechanisms of the emergence of the mind of the community and that of the individual may be effectively studied with Cognitive Robotics in Japan. To promote the study, I develop a hypothesis named “a fabulous game of human beings,” in which each individual can guess the contents of her/his mind effectively by reading the attitudes and mind of others.