"Blame it on my compulsive nature, but I feel compelled to not only send you this penny, but also to elaborate upon the significance this seemingly inane act holds for me. Old friend, we are very far apart, not only geographically, by psychologically as well. Clichéd as it may be to say so, life has begun to take us in very different directions. It has become especially easy for me, given our infrequent contact, to lose sight of the fact that, despite their differences both dynamic and static, physical and emotional, concrete and flesh, our two separate and wildly different realities are not so separate and radically different. To prove this to myself and to you should you need convincing, I am demonstrating our interconnectedness, the fact that we are both still of the same universe, I am physically moving exactly one unit of my world to yours. It is unfortunate that I could not mail you a molecule, for that would be a more authentic demonstration of the concept I am trying grasp, but I do not have the necessary technology. However, this penny, this single economic unit I am using to represent a single physical and conceptual unit, will suffice."