5. Recapitulation of Introverted Rational Types
Both the foregoing types are rational, since they are founded upon reasoning, judging functions. Reasoning [p. 496] judgment is based not merely upon objective, but also upon subjective, data. But the predominance of one or other factor, conditioned by a psychic disposition often existing from early youth, deflects the reasoning function. For a judgment to be really reasonable it should have equal reference to both the objective and the subjective factors, and be able to do justice to both. This, however, would be an ideal case, and would presuppose a uniform development of both extraversion and introversion. But either movement excludes the other, and, so long as this dilemma persists, they cannot possibly exist side by, side, but at the most successively. Under ordinary circumstances, therefore, an ideal reason is impossible. A rational type has always a typical reasonal variation. Thus,
...