 The essential question to be answered by an elaborated identity theory is, in Feigl’s view, the following: “[H]ow are the raw feels related to behavioral (or neurophysiological) states?” (1967, p. 5) By posing the question that way, Feigl excludes a reductive solution to the mind-body problem. More precisely, he dissociates himself from the “reductive fallacies” (1981, p. 16) of eliminative materialism and of radical behaviorism. On the other hand, however, Feigl is eager to demarcate his own position from overtly—metaphysically inspired—dualistic conceptions, such as parallelism or epiphenomenalism. He explicitly opts for a “monistic solution” (ibid., p. 298), arguing that the dualistic position would lead to an ungrounded “duplication of realities” (1967, p. 94), whereas the—scientifically well-established—principle of parsimony “does oppose the operationistic predilection for speaking of two (or more) concepts if the evidential facts, though completely correlated, are qualitatively heterogeneous” (ibid.)