Yates and Orlikowski use the example of PowerPoint presentations, claiming that the "PowerPoint presentation has emerged as a powerful and complex communicative structure that both reflects and shapes organizational practices while also enabling and constraining a range of social actions and outcomes" (2007, p. 87). In a more general example, Anthony Giddens, the originator of structuration theory, discusses childrearing, noting that "is easily forgotten that children 'create parents' as well as parents creating children.  The arrival and development of a child reorders the lives of the adults who care for it and interact with it.  The category 'mother' is given by the arrival of the child, but the practice or enactment of motherhood involves processes of learning that stretch back before and continue after the birth of the child" (Giddens, 1979, p. 130).