The conflicts between the id, ego and superego occur in the unconscious mind and are the result of the work in reconciling sexual, aggressive and other morally or socially unacceptable impulses of the id. Because the conflicts exist in the unconscious mind they are inaccessible to the person and to a therapist. However, the conflicts sometimes bubble through to the surface via slips of the tongue, dreams, jokes, anxiety and what Freud termed as Ego Defense Mechanisms. These are used by the ego to reduce the conflict between the id and superego serve a useful protective function, but they usually involve a degree of self-deception and distortion of reality. Ego defense mechanisms are usually learned during early childhood help the ego deal with inner the inner unconscious conflicts between the id and superego. These defenses include denial (barring an anxiety provoking external stimulus from awareness), repression (barring an anxiety provoking internal stimulus from awareness), projection (placing unacceptable thoughts or impulses in yourself onto someone else), displacement, (taking out impulses on a safer substitute), sublimation (channeling unacceptable impulses in a socially acceptable way), reaction formation (converting the unacceptable impulse into its opposite), rationalization, (supplying a logical or rational excuse for a shortcoming), regression (returning to a previous more childish stage of development). Of these, only sublimation is viewed as a healthy outlet.