Maintaining three actions
Seafarers find their bearings at sea by means of natural points located along the coast. All you have to do is to identify three such landmarks in complementary directions so as to be able to construct a triangle which inevitably contains your ship. This triangle is called the triangle of uncertainty.
The audio installation Le triangle d'Incertitude (Triangle of Uncertainty, 1997) by French composer Cécile le Prado, substitutes these visual landmarks with acoustic ones, thereby constructing a triangle of uncertainty on the ground of a fictive, virtual space comprised of sound recordings she made at the southern tip of Ireland, the western edge of France, and the westernmost point of Spain. (Ars Electronica 97 catalog)
Spatially, as well experientially, an interesting conceptual shift takes place. For sailors, the boat is inevitably the center point of the equation, based on its three external coordinates. With Le Prado having recorded her material on specific locations, thereby affixing the sound to a coordinate, it automatically places the listener in the center of the piece. The listener becomes the boat.