Your descrition of borders is at once phantasmic and yet distinct in the firm social and personal crossing, which I suppose is the ambiguous nature of them. I was very ill in my early twenties and almost died, and though I am 27 I live with the reality that, every second, I am in a sense dying-and it may happen the next time I cross a busy intersection tomorrow when a car runs a red light. I tell people after I was certain of my death and then lived, the fear of death got out of my system. For me, though there are lines, once you recognize them they become obliterated for you. This essay was very interesting and a lot to think about .