“… Deductive reasoning is also the central process whereby New York artist Dennis Oppenheim (*1938) looks upon the world. Explaining his earth projects in a 1969 interview, he notes that the hole inspires the question “of where exactly is the object. […] Is your piece the entire globe with a hole in it? I’m sure it is. […] I know your focus can be twofold. There’s the negative area, but there comes a point where the negative area ends and the terrain begins and extends”.