On the threshold of the living subject
The threshold of the living subject constitutes the zone of transition into and out of human bodily substance. Unlike the threshold of exit, the threshold of entry occurs in and through another body. Women in pregnancy bear the between, the entrance across which the unborn must pass in order to be distinguished from those who carry them. Neither a pure moment in time nor a single point in space, the threshold of the living subject has duration and extent. When and where that between begins and ends, what status the bodily substance at that threshold might have, is an entirely social and cultural matter.