Content, the internal part of a semiotic domain, gets made in history by real people and their social interactions. They build that content-in part, not wholly-in certain ways because of the people they are (socially, historically, culturally). That content comes to deﬁne one of their important identities in the world. As those identities develop their further social interactions, they come to aﬀect the on-going development and transformation of the content of the semiotic domain in yet new ways. The relationship between the internal and external world is reciprocal [italics added].