As everything is relative, I am in the one and only place that there is. As I can not see beyond the walls of this room, or beyond the horizon out of the window behind me, I can assume that they do not exist at this single point in time. Therefore I am at the only point, and everyone else can not exist, as I can not see you.
But common sense and my background in science tells me otherwise. As everything is relative, and as there is no universally known or accepted start point (ie the exact place of the big bang), then my location can never be determined, only suggested.