An Observer (n.) sees the person he is equipped to see: the judging observer catches the conscious character, the perceiving observer the unconscious one.
An Observer (n.) cannot disregard his own complexes in psychology, because they do not disregard him; his constitution, the most absolutely prejudiced thing in him, decides his theory.
The Observer (n.) is the one immediate guarantor of reality: without him there is no world and no truth, and even physics runs into him at the decisive point.
The Observer (n.) cannot finally be eliminated from the picture of the world, as modern physics shows, so the psychic premises of knowledge stay operative despite the nominalist hope of observer-free objectivity.
The Observer (n.) alters the unconscious as atomic physics alters its object: the act of observation changes what is observed, so its real nature cannot yet be objectively determined.