Against this, I suggest that being a self is partly the result of inborn dispositions and partly the result of experience, especially social experience. The newborn child has many inborn ways of acting and of responding, and many inborn tendencies to develop new responses and new activities. Among these tendencies is a tendency to develop into a person conscious of himself. But in order to achieve this, much must happen. A human child growing up in social isolation will fail to attain a full consciousness of self.
Thus I suggest that not only perception and language have to be learned – actively – but even the task of being a person; and I further suggest that this involves not merely a close contact with the World 2 of other persons, but also a close contact with the World 3 of language and of theories such as a theory of time (or something equivalent).