Porter pointed out that Western historiography had previously assumed mind–body dualism (i.e. that the body is fundamentally separate from the mind or soul) and therefore that the cultural history of bodies as material objects had been overlooked: 'given the abundance of evidence available, we remain remarkably ignorant about how individuals and social groups have experienced, controlled, and projected their embodied selves. How have people made sense of the mysterious link between "self" and its extensions?