Behavioral genetics has some precision

Freud’s view of personality was passionate, controversial, sexy, unfalsifiable and wrong. But it was a personal theory of personality. Anyone could immediately apply it, party-game style, to his or her own unconscious motivations, hidden fantasies and terrible parents. The behavioural-genetics view of personality is calm, uncontroversial (except to a few diehard Freudians), empirically testable and correct. But it is an impersonal theory of personality.