: A. Introduction / History of problem Any act is conditional on underlying processes. Visual identification of an object requires both the use of the eyes and that light is reflected from the object. Parapsychologists claim that some people have the ability to perform such acts as identifying objects when the conditions normally assumed to be necessary for their execution are absent. Such behavior they call extrasensory perception, or ESP ( Kurtz, 1985). The ESP debate is about whether …
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