It looked like a perfect picture story, with all the right elements — the Nile, a fountain, 2,000 large inflatable bananas heaped in the shape of a pyramid, all set in a framework of Austrian conceptual art theory. The idea was that when the fountain began to shoot water into the air the bundles of bananas piled up from the base would explode and the bananas would disperse, floating gently down the Nile.