...illness changes how one is in the world. Moreover, the world of the ill person changes; it transforms into a different landscape, filled with obstacles. Distances increase. It becomes uncanny. The world of the sick belongs to a different universe from that of the healthy, and the interaction between them is clunky, difficult, abrasive. ... The geography of my world is no longer a shared one. It belongs to me alone, and separates me from the people I walk with. The healthy ones who don't even notice they are healthy.