         Philosophy Both Eastern and Western philosophers have studied the concept in great detail.
<meaning-changed>          Philosophy Both Eastern and Western philosophers have studied the concept in great detail.
 Jung In Carl Jung's theory of the ego, described in 1916 in Psychological Types, intuition is an "irrational function", opposed most directly by sensation, and opposed less strongly by the "rational functions" of thinking and feeling. Jung defined intuition as "perception via the unconscious": using sense-perception only as a starting point, to bring forth ideas, images, possibilities, ways out of a blocked situation, by a process that is mostly unconscious. Philosophy Both Eastern and Western philosophers have studied the concept in great detail.