"The dilemma of traditional sex research lay in the unconscious, but unquestiongly assumed division into opposing drives and hereditary factors. . . The division into heterosexuality and homosexuality, into hetersexuals and homosexuals, is also an artefact that rests on a grave error, namely, on the assumption that a fundamentally different model is necessary to explain heterosexual and homosexual behavior. The entire investigation of etiology was ideologically loaded beforehand because it separated a segment of the sexual contiuum and attempted to make analyses with the help of fundamentally different concepts."