Alternative-ness

In thinking about more of what an alternative body is and the interaction between the alternative and the non-alternative, I realized that (though this may be an obvious observation) there is a constant duality between the two; there cannot be one without the other. Without the other, there is no difference. In a library that I am designing for my studio practice class, I am currently playing with the duality of things, and how form and structure and other non-material ways could create a shared cohesive interaction. Taking opposite ideas and objects such as temporary vs. permanent, adults vs. children; to further sculpt the space and the interactions that the different users will have.