Often lost in the debate over the validity of social construction is the question of what is being constructed. Particularly troublesome in this area is the status of the natural sciences, where there is conflict between biological and social approaches to mental illness, and in other areas. Ian Hacking looks at the issue of child abuse, and examines the ways in which advanced research on new weapons influences not the content but the form of science. In conclusion, Hacking comments on the "culture wars" in anthropology, in particular the spat between leading enthnographers over Hawaii and Captain Cook.