Instincts and habits, furthermore, limit the field of possible courses of action that suggest themselves. We come, through habit, to be alive only to certain possibilities to the practical exclusion of all others. Thinking becomes fruitful and suggestive when it is freed from the limited number of suggestions that occur through force of habit. But original thinking is rare precisely because habits do have such a compulsive power in determining the possibilities of action that suggest themselves to us. The man who moves in a rut of habitual reactions will "never think" of possibilities that "stare in the face" a less habit-ridden thinker. Inventiveness, originality, creative intelligence, whatever one chooses to call it, consists, in no small measure, in this ability to remain alive to a wide variety of stimuli, to keep sensitive to all the possibilities that are in a situation, instead of those only to which we are immediately prompted by instinct or habit. The possibility of using the current of a river as power is not the first possibility that flowing water suggests. Past training and individual differences in temperament not only limit the possibilities that do occur to us; they seriously distort, color, and qualify those of which we become conscious. We forecast differently and with differing degrees of accuracy the consequences of those possible courses of action which do occur to us according to the influence and stimulation which particular native traits and acquired impulses have in our conduct. Ideally, the consequences which we imaginatively forecast as following from a given course of action, should tally with the consequences which genuinely follow from it. But there is too often a sad discrepancy between the consequences as they are foreseen by the individual concerned and the genuine consequences that could be foreseen by any disinterested observer. The discrepancy between the genuine and the imagined consequences of given ideas or suggestions is caused more than anything else by the hopes, fears, aversions, and preferences which, by nature or training, are controlling in a man's behavior. Facts are weighed differently according as one or another of these psychological influences is present. We intend unconsciously to substitute a desired or expected consequence for the actual one; we tend to be oblivious to consequences which we fear, and quick to imagine those for which we hope. On the day before an election the campaign managers on both sides, in the glow and momentum of their activities, are confident of the morrow's victory. The opponent of prohibition saw nothing but drug fiends and revolution as its consequences; its extreme advocates saw it as the salvation of mankind.