sense of futility that comes from doing anything merely to prove to yourself that you can do it: having a child, climbing a mountain, making some sexual conquest, committing suicide.The marathon is a form of demonstrative suicide, suicide as advertising: it is running to show you are capable of getting every last drop of energy out of yourself, to prove i? to prove what? That you are capable of finishing. Graffiti carry the same message. They simply say: ?m so-and-so and I exist! They are free publicity for existence.Do we continually have to prove to ourselves that we exist? A strange sign of weakness, harbinger of a new fanaticism for a faceless performance, endlessly self-evident.