Meaning is universally embodied in _ideas_. To know, to understand the meaning, to get ideas, are the same. Now, in ideas two factors may be distinguished. First, every idea has as its base an image or emphasized portion of experience. In some forms of ideation we are more immediately aware of the presence of images than in others, but no idea--even the most abstract--can exist apart from an ultimate base. Second, every idea is equally a function of _reference_ and _control_. As _reference_, the idea projects in the mind's view an antic.i.p.ation of experiences and of the conditions upon which these experiences depend for their realization; as _control_, ideas are agencies in turning antic.i.p.ations into realizations.[54]

To be more specific on both points: Since the days of Galton it has been almost a commonplace in psychology that ideas are embodied in forms of imagery which vary for and in different individuals. It has been maintained, it is true, that in abstract forms of thought, imagery disappears. This objection is met in two ways. For one, words--the vehicle of many abstract ideas--involve imagery of a most p.r.o.nounced type: for another, every idea, when examined closely, discloses an image, no matter how much for the time being this has been driven into obscurity by the characteristics of reference and control. Furthermore, when we examine the antic.i.p.atory aspect of ideas, the presence of imagery both with reference to outcome and to conditions is so evident that its presence will scarcely be denied.

The second point may be ill.u.s.trated in several ways. In everyday life antic.i.p.ation and realization are inseparable from the nature and use of ideas. "Hat" means antic.i.p.ation of protection to the head and the tendency toward setting in motion the conditions appropriate to the realization of this antic.i.p.ation. The same factors are evident in the boy's definition of a knife as "something to whittle with." Again it is maintained that intelligence is an essential factor in human self-consciousness. By this is meant that human beings are universally aware in some degree of what they are about. And this awareness consists in understanding the meaning of their actions, of forecasting the outcome of various kinds of activity, of apprehending beforehand the conditions connected with determinate results. Within this sphere we speak of certain men as being pre-eminently intelligent, meaning that for such men outcomes are previewed and connected with their appropriate conditions far beyond the range of ordinary foresight. Finally, scientific intelligence is essentially of this kind. It aims at understanding the varying types of process which operate in nature and thus at possessing itself of information with reference to results to be expected under determinate conditions. For example, the knowledge acquired in his researches by Louis Pasteur enabled him to predict the life or death of animals inoculated with charbon virus according as they had or had not been vaccinated previously. His information, in other words, became an instrument for the control and eradication of the disease. And what is true of this case is true of all science. To the scientist ideas are "working hypotheses" and have their value only as they enable him to predict, and to control. And while it is true that the scientist usually overlooks the so-called _practical_ value of his discoveries, it is none the less true that in due time the inventor follows the investigator. The investigator is content to construct and show the truth of his idea. The inventor a.s.sumes the truth of the investigator's work and carries his idea as a constructive principle into the complications of life. To both men "knowledge is power,"

although the "power" may be realized in connection with different interests. But if this be true, ideas can no longer be regarded as copies in individual experience of some pre-existing reality. They are rather instruments for transforming and directing experience, by way of constructing antic.i.p.ations and the conditions appropriate to their realization. Herein also consists their truth or falsity. The true idea is reliable, carrying us from antic.i.p.ation to realization; the false idea is unreliable, and fails in bringing the promised result.

Now, in the development of instruments generally, we may distinguish a rule-of-thumb or more or less unreflective stage of construction, and one entirely reflective. As to use there is the distinction of inexpert and expert control. This leads us to expect that in the thought-function also certain typical stages of construction and of control may be found.

To the investigation of this point we shall next direct attention.

II

In its development from crude to expert forms judgment exhibits three typical stages--_the impersonal_, _the reflective_, and _the intuitive_.

These we shall consider in order of development. But first it is to be noticed that these stages of judgment are not to be regarded as hard and fast distinctions of the kind that no indications of the higher are to be found in the lower types, but rather as working distinctions within a process of continuous development.

1. _The impersonal judgment._--Ever since the days of the Greek grammarians the impersonal judgment has been considered an anomaly in logic. And the reason is not far to seek. From the time of Aristotle it has been customary to maintain that judgments, when a.n.a.lyzed, disclose a subject and a predicate. Logically considered, these appear to be entirely correlative, for, as Erdmann puts it,[55] "an event without a substrate, a quality without a subject, is altogether unpresentable."

But there is in all languages a cla.s.s of judgments, such as, "It rains,"

"It snows," "Fire!" in which no directly a.s.serted subject is discoverable. To these the name impersonal and subjectless has been given. Here then is the difficulty. If we admit that the impersonal expression involves predication, we must, in all consistency, search for a subject, while at the same time the subject refuses to disclose itself. In ancient days the orthodox logician confined his search to language and to the spoken or written proposition. The unorthodox critic maintained, in opposition to this, that a subject was provided only by warping and twisting the natural sense of the impersonal expression. And thus the matter stood until the development of modern comparative philology. It was then demonstrated beyond the possibility of doubt that the "it" (or its equivalent) of the impersonal is a purely contentless form word. Language provides no subject whatsoever. So strong, however, is the hold of tradition that the search has been renewed. Attention has been turned upon the mental processes involved, and this time with more apparent result. Although there has been no general agreement with reference to the subject, a cla.s.sification of the different views may still be made. (_a_) The subject is universal and undetermined; (_b_) it is individual and more or less determined; (_c_) between these extremes lies almost every intermediate degree conceivable.

Ueberweg maintains that the subject of the impersonal is the actual totality of present experience. When we ask, "What rains?" we must understand a reference to our general environment, in which no special element is singled out. Sigwart, on the other hand, maintains that the subject can be construed only as the actual sense-impression. This diversity of opinion might seem to indicate that, were it not for the constraining power of theory, a subject would scarcely be thought of for the impersonal. Still it must be admitted that when we examine the impersonal expression closely we can discover a sense-impression, whether definite or indefinite, combined with an idea. This would seem to give the case to the orthodox logician, for he will at once claim the sense-impression as the subject and the idea as the predicate of the judgment. But we must have a care. Predication is usually held to consist in a _reference_ of predicate _to_ subject. The factors of the judgment are, as it were, held apart. In the impersonal no such thing as this can be discovered. The meaning is so close a unity that impression and idea are entirely fused. We may a.n.a.lyze the expression and find them there, but by so doing we destroy the immediacy which is an essential characteristic of the impersonal. In other words, the impersonal does not a.n.a.lyze itself. It is entirely unconscious of its make-up. And yet it is definite and applies itself with precision: If I am in a lecture-hall and hear the fire-alarm, the thought "Fire!" which enters my mind leads to an immediate change in my conduct. I arise, move quietly out, and prepare for duty. If, on the other hand, I open the street door and the rain strikes my face, I e.j.a.c.u.l.a.t.e "Raining!" turn, reach for my umbrella, and pa.s.s out protected. In both cases I act _knowingly_ and with _meaning_, but I do not a.n.a.lyze the movement either of thought or of action. A correlate to the unreflective impersonal judgment is found in early custom. Custom embodies social ideas and is an instrument for the determination and control of action. Individuals moved by custom know what they are about and act with precision according as custom may demand. But it is notorious that custom is direct and unreflective. It represents social instruments of control which have grown up without method and which represent the slow accretion of rule-of-thumb activities through many ages. So in the impersonal judgment we have a type of intellectual instrument which has been brought to a high degree of precision in use, but which still retains the simplicity and certainty of an unquestioned instrument of action. For this reason, whatever complexity of elements the impersonal may present to a reflective view, it does not contain to itself.

Consequently it may be best to say that to the impersonal there is neither subject, predicate, nor reference of the one to the other. These are distinctions which arise only when the instrument of action has been questioned and the mind turns back upon the meaning which it has unhesitatingly used, a.n.a.lyzing, investigating, constructing, laying bare the method and function of its tools. Thus arises a new and distinctive type of judgment, viz., the reflective.

2. _The reflective judgment._--By the reflective judgment is to be understood that form of meaning whose structure and function have become a problem to itself. The days of nave trust and spontaneous action have gone by. Inquiry, criticism, aloofness, stay the tendency to immediate action. Meaning has grown worldly wise and demands that each situation shall explain itself and that the general principles and concrete applications of its own instruments shall be made manifest. Hence in the various forms of reflective thought we find the progressive steps in which meaning comes to full consciousness of its function in experience.

The demonstrative judgment (the simplest of the reflective type) carries doubt, criticism, construction, and a.s.sertion written on the face of it.

For example, in the expression, "That is hot," we do not find the directness and immediacy of response characteristic of the simpler impersonal "hot." Instead, we note a clash of tendencies, a suspension of the proposed action, a demand for and a carrying out of a reconsideration of the course of action, the emergence of a new meaning, and the consequent redirection of activities. An iron lies upon the hearth; I stretch out my hand to return it to its place; I stop suddenly, having become conscious of signs of warmth; the thought arises in my mind, "That is hot;" I experiment and find my judgment correct; I search for a cloth, and thus protected carry out my first intention.

Again, a hunter notes a movement in the thicket, quickly raises his gun, and is about to fire. Something in the movement of the object arrests him. He stops, thinking, "That is a man, perhaps." What has caught the eye has arrested his action, has become a demand, and not until the situation has become clear can the hunter determine what to do. In other words, he must reflectively a.s.sure himself what the object is before he can satisfy himself as to how he should act. Subject and predicate have arisen and have consciously played their parts in the pa.s.sage from doubt to decision.

Under the heading "individual judgments" are cla.s.sed such expressions as, "That ship is a man-o'-war," "Russia opposes the policy of the open door in China." In both these cases it is evident that an advance in definiteness of conception and of complexity of meaning has been made, while at the same time we recognize that the instrumental characteristics of the thought-movement remain the same. In considering the subject of the judgment we note that the stimulus presents itself partly as a determinate factor and partly as a problem--an insistent demand. The expression, "That ship is a man-o'-war," might be written, "That is a ship and of the kind man-o'-war," and it thus const.i.tutes what Sigwart calls a "double synthesis." As used in actual judgment, however, the two are held together and const.i.tute the statement of a single stimulus of which a certain portion is evident and a certain portion is in doubt. The working out of the difficulty is given in the predicate "is a man-o'-war," in which we at once detect the instrumental characteristics fundamental to all judgment. To ill.u.s.trate: At the close of the battle of Santiago, in the Spanish-American war, smoke appeared upon the horizon revealing the presence of a strange ship.

Instantly attention was directed to it, and it became a problem for action--a demand for instrumental information. Soon it was identified as a man-o'-war, and the American ships were cleared for action. Closer approach raised a further question with reference to its nationality.

After some debate this also was resolved, and hostile demonstrations were abandoned.

The universal judgment is sometimes said to exhibit two distinct forms.

Investigation, however, has proved this statement to be incorrect.

Instances taken in themselves and apart from their character are of no logical significance. Advance is made by weighing instances and not by counting them. In short, the true universal is the hypothetical judgment, and the reason for this may be readily shown. The hypothetical judgment is essentially double-ended. On the one hand, it is a statement of the problem of action in terms of the conditions which will turn the problem into a solution. On the other hand, it is an a.s.sertion that once the conditions of action have been determined the result desired may be attained. Here we note that the judgment has come to clear consciousness of itself and of the part which it plays in experience. It has now obtained an insight into the criterion of its legitimate employment, _i. e._, of its truth and falsity. And this insight makes the justification of its claim almost self-evident. For, inasmuch as the hypothetical judgment says, "If such and such conditions be realized, such and such a result will be obtained," the test of the claim is made by putting the conditions into effect and watching whether the promised experience is given. And further, since it has been found that the judgment formulated as a hypothesis actually accomplishes what it promises, we must admit that the hypothetical judgment is also categorical. These two factors cannot be separated from each other. It is true that the hypothetical judgment reduces every valid meaning to the form, "_If_ certain conditions be realized," but it as plainly and positively a.s.serts, "such and such results _will_ be obtained." When we grasp the absolute correlativity of the hypothetical and categorical aspects of judgment, we realize at once the essentially instrumental character of judgment, when it comes to consciousness of its structure and function. It arises in the self-conscious realization of a problem.

This it reflects upon and sizes up. When the difficulty has been apprehended, the judgment emerges as the consciousness of the conditions which will attain the desired end of action freed and unimpeded. This may be ill.u.s.trated by reference to the work of Pasteur cited above. His investigations began in a problem set for him by agricultural conditions in France. A certain disease had made the profitable rearing of sheep and cattle almost an impossibility. After long and careful examination he discovered the beneficial effects of vaccination. To him the conditions which governed the presence of the disease became apparent, and this knowledge furnished him with an instrument by means of which one difficulty was removed from the path of the stock-raiser. In this ill.u.s.tration we have an epitome of the work accomplished everywhere by the scientist. It is his task to develop and to reduce to exact terms instruments of control for the varied activities of life. In its parts and as a whole each instrument is intelligently constructed and tested so that its make-up and function are exactly known. Because of this, reasoned belief now takes the place of unreflective trust as that was experienced in the impersonal stage of judgment. What at first hand might appear to be a loss was in reality a gain; the breakdown of the impersonal was the first step in the development of an instrument of action conscious of its reason for being, its methods and conditions of action. These latter const.i.tute the distinctive subject and predicate of the reflective judgment.

This brings us to the connection between the hypothetical character of this form of judgment and its universality. And this perhaps will now be quite apparent. The reflective judgment lays bare an objective connection between the conditions and outcomes of actions. It proves its point by actually constructing the event. Such being the case, universality is no more than a statement of identical results being predictable wherever like conditions are realized. If it be true that "man is mortal," then it is an identical statement to insist that, "Wherever we find men there we shall also find mortality."

And this point brings us naturally to the treatment of the disjunctive judgment: "A is either B or C or D." In the disjunctive judgment the demand is not for the construction of a reliable instrument of action, but for the resolution of a doubt as to which instrument is precisely fitted to the circ.u.mstances. In fact, the disjunctive judgment involves the identification of the practical problem. When we say of a man, "He is either very simple or very deep," we have no doubt as to our proper course of action in either case. If he is simple, then we shall do so and so; if he is deep, then another course of action follows. We can lay out alternative courses beforehand, but the point of difficulty lies here: "But just which is he?" In short, the disjunctive judgment is the demand for and the attempt at a precise diagnosis of a concrete problem.

To ill.u.s.trate: A patient afflicted with aphasia is brought to a physician. The fact that the trouble is aphasia may be quite evident.

But what precisely is the form and seat of the aphasia? To the mind of the educated physician the problem will take on the disjunctive form: "This is either subcortical or cortical aphasia. If subcortical, intelligence will not be impaired; if cortical, the sensor and motor tracts will be in good condition." Appropriate tests are made and the subcortical possibilities are shut out. The disjunction disappears and the judgment emerges: "This is a case of cortical aphasia." But now a new disjunction arises. It is either the sensory or motor form of cortical aphasia, and, whichever one of these, it is again one of several possibilities. As the alternatives arise, the means for discriminating them arise also; determinate symptoms are observed, and in due time the physician arrives at the final conclusion: "This is sensory cortical aphasia of the visual type." Having determined this, his method of action is a.s.sured, and he proceeds to the appropriate operation. Thus, finally, we are brought to a form of judgment aware not only of its motive, method, and justification, but also to one aware of its specific application to individual cases. Thus it would seem as though judgment had returned upon itself and had completed the determination of its sphere of action. And in one sense this is true. In the disjunctive judgment, as inclusive of the motives of the hypothetical and categorical forms, the reflective judgment would appear to have come to its limit of development. One thing, however, remains to be considered, viz., the development from crude to expert uses of intellectual instruments.

3. _The intuitive judgment._--As stated above, the intuitive type of judgment depends upon efficiency in the use of judgment. In this regard there is a great similarity between the impersonal and the intuitive judgments. Both are immediate and precise. But there is a radical and essential difference. The impersonal judgment knows nothing of the strict a.n.a.lysis, insight, and constructive power of the reflective judgment. The intuitive judgment, on the other hand, includes the results of reflection and brings them to their highest power.

Paradoxically put, in the intuitive judgment there is so much reflection that there is no need for it at all. To the intuitive judgment there is no hesitation, no aloofness. Action is direct, but entirely self-conscious. That such a type of judgment as the intuitive exists there can be no doubt. There is all the difference in the world between the quality of consciousness of a mere layman and that of an expert, no matter what the line. The layman must size up a situation. It is a process whose parts are successive, whether much or little difficulty be experienced. For the expert situations are taken in at a glance, parts and whole are simultaneous and immediate. Yet the meaning is entirely exact. The expert judgment is self-conscious to the last degree. While other individuals are thinking out what to do, the expert has it, sees the advantage, adjusts, and moves. Demand and solution jump together.

How otherwise can we explain, for example, the action of an expert ball-player? Witness his rapid reactions, his instantaneous adjustments.

Mistakes of opponents which would never be noticed by the average player are recognized and seized upon. On the instant the new opening is seen, the adjustment is evident, the movement made. Ill.u.s.trations to the same effect could be drawn from other modes of life, _e. g._, music, the military life, etc. That intuitive judgments are not more common is a proof in itself of their distinctive character and value. Only in so far as we become experts in our special fields of experience and have reduced our instruments of action to precise control, can we expect the presence of intuitive judgments. They remain, therefore, as the final outcome of the judgment-function made perfect in its technique and use.

In conclusion we shall make a brief summary of our investigation and a criticism of certain current theories of judgment.

Judgment is essentially instrumental. Its function is to construct, justify, and refine experience into exact instruments for the direction and control of future experience through action. It exhibits itself first in the form of instruments developed unsystematically in response to the hard necessities of life. In a higher stage of development the instrumental process itself is taken into account, and systematically developed until in the methodical procedure of science the general principles of knowledge are laid bare and efficient instruments of action constructed. Finally, constant, intelligent use results in complete control, so that within certain spheres doubt and hesitancy would seem to disappear as to the character of the tools used, and remain only as a moment in determining their wisest or most appropriate employ.

The criticism indicated is based upon the instrumental character of judgment and is directed against all theories which contend that knowledge is a "copying" or "reproducing" of reality. In whatever form this "copy" theory be stated, the question inevitably arises how we can compare our ideas with reality and thus know their truth. On this theory, what we possess is ever the copy; the reality is beyond. In other words, such a theory logically carried out leads to the breakdown of knowledge. Only a theory which contains and constructs its criterion within its own specific movement can verify its constructions. Such a theory is the instrumental. Judgment constructs a situation in consciousness. The values a.s.signed in this situation have a determining influence upon values further appreciated. The construction arrived at concerns future weal and woe. Thus gradually a sense of truth and falsity attaches to the construing of situations. One sees that he _must_ look beyond _this_ situation, because the way he estimates _this_ situation is fraught with meaning beyond itself. Hence the critically reflective judgment in which hesitancy and doubt direct themselves at the att.i.tude, elements, and tools involved in defining and identifying the situation, instead of at the situation itself _in toto_. Instead of developing a complex of experience through a.s.signing qualities and meanings to the _situation_ as such, some one of the quales is selected, to have _its_ significance determined. It becomes, _pro tempore_, the situation judged. Or the same thing takes place as regards some "idea"

or value hitherto immediately fastened upon and employed. In either case we get the reflective judgment, the judgment of pure relationship as distinct from the constructive judgment. But the judgment of relation, employing the copula to refer a specified predicate to a specified object, is after all only for the sake of controlling some immediate judgment of constructive experience. It realizes itself in forming the confident habit of prompt and precise mental adjustment to individualized situations.

VII

THE NATURE OF HYPOTHESIS

In the various discussions of the hypothesis which have appeared in works on inductive logic and in writings on scientific method, its structure and function have received considerable attention, while its origin has been comparatively neglected. The hypothesis has generally been treated as that part of scientific procedure which marks the stage where a definite plan or method is proposed for dealing with new or unexplained facts. It is regarded as an invention for the purpose of explaining the given, as a definite conjecture which is to be tested by an appeal to experience to see whether deductions made in accordance with it will be found true in fact. The function of the hypothesis is to unify, to furnish a method of dealing with things, and its structure must be suitable to this end. It must be so formed that it will be likely to prove valid, and writers have formulated various rules to be followed in the formation of hypotheses. These rules state the main requirements of a good hypothesis, and are intended to aid in a general way by pointing out certain limits within which it must fall.

In respect to the origin of the hypothesis, writers have usually contented themselves with pointing out the kind of situations in which hypotheses are likely to appear. But after this has been done, after favorable external conditions have been given, the rest must be left to "genius," for hypotheses arise as "happy guesses," for which no rule or law can be given. In fact, the genius differs from the ordinary plodding mortal in just this ability to form fruitful hypotheses in the midst of the same facts which to other less gifted individuals remain only so many disconnected experiences.

This unequal stress which has been laid on the structure and function of the hypothesis in comparison with its origin may be attributed to three reasons: (1) The facts, or data, which const.i.tute the working material of hypotheses are regarded as given to all alike, and all alike are more or less interested in systematizing and unifying experience. The purpose of the hypothesis and the opportunity for forming it are thus practically the same for all, and hence certain definite rules can be laid down which will apply to all cases where hypotheses are to be employed. (2) But beyond this there seems to be no clue that can be formulated. There is apparently a more or less open acceptance of the final answer of the boy Zerah Colburn, who, when pressed to give an explanation of his method of instantaneous calculation, exclaimed in despair: "G.o.d put it into my head, and I can't put it into yours."[56]

(3) And, furthermore, there is very often a strong tendency to disregard investigation into the origin of that which is taken as given, for, since it is already present, its origin, whatever it may have been, can have nothing to do with what it is now. The facts, the data, are _here_, and must be dealt with as they _are_. Their past, their history or development, is entirely irrelevant. So, even if we could trace the hypothesis farther back on the psychological side, the investigation would be useless, for the rules to which a good hypothesis must conform would remain the same.

Whether or not it can be shown that Zerah Colburn's ultimate explanation is needed in logic as little as Laplace a.s.serted a similar one to be required in his celestial mechanics, it may at least be possible to defer it to some extent by means of a further psychological inquiry. It will be found that psychological inquiry into the origin of the hypothesis is not irrelevant in respect to an understanding of its structure and function; for origin and function cannot be understood apart from each other, and, since structure must be adapted to function, it cannot be independent of origin. In fact, origin, structure, and function are organically connected, and each loses its meaning when absolutely separated from each other. It will be found, moreover, that the data which are commonly taken as the given material are not something to which the hypothesis is subsequently applied, but that, instead of this external relation between data and hypothesis, the hypothesis exercises a directive function in determining what are the data. In a word, the main object of this discussion will be to contend against making a merely convenient and special way of regarding the hypothesis a full and adequate one. Though we speak of facts and of hypotheses that may be applied to them, it must not be forgotten that there are no facts which remain the same whatever hypothesis be applied to them; and that there are no hypotheses which are hypotheses at all except in reference to their function in dealing with our subject-matter in such a way as to facilitate its factual apprehension. Data are selected in order to be determined, and hypotheses are the ways in which this determination is carried on. If, as we shall attempt to show, the relation between data and hypothesis is not external, but strictly correlative, it is evident that this fact must be taken into account in questions concerning deduction and induction, a.n.a.lytic and synthetic judgments, and the criterion of truth. Its bearing must be recognized in the investigation of metaphysical problems as well, for reality cannot be independent of the knowing process. In a word, the purpose of this discussion of the hypothesis is to determine its nature a little more precisely through an investigation of its rather obscure origin, and to call attention to certain features of its function which have not generally been accorded their due significance.

I

_The hypothesis as predicate._--It is generally admitted that the function of the hypothesis is to provide a way of dealing with the data or subject-matter which we need to organize. In this use of the hypothesis it appears in the role of predicate in a judgment of which the data, or facts, to be construed const.i.tute the subject.

In his attempts to reduce the movements of the planets about the sun to some general formula, Kepler finally hit upon the law since known as Kepler's law, viz., that the squares of the periodic times of the several planets are proportional to the cubes of their mean distances from the sun. This law was first tentatively advanced as a hypothesis.

Kepler was not certain of its truth till it had proved its claim to acceptance. Neither did Newton have at first any great degree of a.s.surance in regard to his law of gravitation, and was ready to give it up when he failed in his first attempt to test it by observation of the moon. And the same thing may be said about the caution of Darwin and other investigators in regard to accepting hypotheses. The only reason for their extreme care in not accepting at once their tentative formulations or suggestions was the fear that some other explanation might be the correct one. This rejection of other possibilities is the negative side of the matter. We become confident that our hypothesis is the right one as we lose confidence in other possible explanations; and it might be added, without falling into a circle, that we lose confidence in the other possibilities as we become more convinced of our hypothesis.

It appears that such may be the relation of the positive and negative sides in case of such elaborate hypotheses as those of Kepler and Newton; but is it true where our hypotheses are more simple? It is not easy to understand why the fact that the hypothesis is more simple, and the time required for its formulation and test a good deal shorter, should materially change the state of affairs. The question remains: Why, if there is no opposition, should there be any uncertainty? In all instances, then, the hypothesis appears as one among other possible predicates which may be applied to our data taken as subject-matter of a judgment.

_The predicate as hypothesis._--Suppose, then, the hypothesis is a predicate; is the predicate necessarily a hypothesis? This is the next question we are called upon to answer, and, since the predicate cannot very well be taken aside from the judgment, our question involves the nature of the judgment.

While it will not be necessary to give a very complete account of the various definitions of the judgment that might be adduced, still the mention of a few of the more prominent ones may serve to indicate that something further is needed. In definitions of the judgment sometimes the subjective side is emphasized, sometimes the objective side, and in other instances there are attempts to combine the two. For instance, Lotze regards the judgment as the idea of a unity or relation between two concepts, with the further implication that this connection holds true of the object referred to. J. S. Mill says that every proposition either affirms or denies existence, coexistence, sequence, causation, or resemblance. Trendelenburg regards the judgment as a form of thought which corresponds to the real connection of things, while Ueberweg states the case a little differently, and says that the essence of judgment consists in recognizing the objective validity of a subjective connection of ideas. Royce points to a process of imitation and holds that in the judgment we try to portray by means of the ideas that enter into it. Ideas are imitative in their nature. Sigwart's view of the judgment is that in it we say something about something. With him the judgment is a synthetic process, while Wundt considers its nature a.n.a.lytic and holds that, instead of uniting, or combining, concepts into a whole, it separates them out of a total idea or presentation. Instead of blending parts into a whole, it separates the whole into its const.i.tuent parts. Bradley and Bosanquet both hold that in the judgment an ideal content comes into relation with reality. Bradley says that in every judgment reality is qualified by an idea, which is symbolic. The ideal content is recognized as such, and is referred to a reality beyond the act. This is the essence of judgment. Bosanquet seems to perceive a closer relation between idea and reality, for although he says that judgment is the "intellectual function which defines reality by significant ideas," he also tells us that "the subject is both in and out of the judgment, as Reality is both in and out of my consciousness."

In all these definitions of judgment the predicate appears as ideal. An ideal content is predicated of something, whether we regard this something as an idea or as reality beyond, or as reality partly within and partly without the act of judging; and it is ideal whether we consider it as one of the three parts into which judgments are usually divided, or whether we say, with Bosanquet and Bradley, that subject, predicate, and copula all taken together form a single ideal content, which is somehow applied to reality. Moreover, we not only judge about reality, but it seems to be quite immaterial to reality whether we judge concerning it or not.

Many of our judgments prove false. Not only do we err in our judgments, but we often hesitate in making them for fear of being wrong; we feel there are other possibilities, and our predication becomes tentative.

Here we have something very like the hypothesis, for our ideal content shows itself to be a tentative attempt in the presence of alternatives to qualify and systematize reality. It appears, then, on the basis of the views of the judgment that have been mentioned, that not only do we find the hypothesis taking its place as the predicate of a judgment, but the predicate is itself essentially of the nature of a hypothesis.

In the views of the judgment so far brought out, reality, with which it is generally admitted that the judgment attempts to deal in some way, appears to lie outside the act of judging. Now, everyone would say that we make some advance in judging, and that we have a better grasp of things after than before. But how is this possible if reality lies without or beyond our act of judging? Is the reality we now have the same that we had to begin with? If so, then we have made no advance as far as the real itself is concerned. If merely our conception of it has changed, then it is not clear why we may not be even worse off than before. If reality does lie beyond our judgment, then how, in the nature of the case, can we ever know whether we have approached it or have gone still farther away? To make any claim of approximation implies that we do reach reality in some measure, at least, and, if so, it is difficult to understand how it lies beyond, and is independent of, the act of judging.

_Further a.n.a.lysis of judgment._--It remains to be seen whether a further investigation of the judgment will still show the predicate to be a hypothesis. It is evident that in some cases the judgment appears at the end of a more or less p.r.o.nounced reflective process, during which other possible judgments have suggested themselves, but have been rejected.

The history of scientific discovery is filled with cases which ill.u.s.trate the nature of the process by which a new theory is developed.

For instance, in Darwin's _Formation of Vegetable Mould through the Action of Earth Worms_, we find the record of successive steps in the development of his hypothesis. Darwin suspected from his observations that vegetable mold was due to some agency which was not yet determined.

He reasoned that if vegetable mold is the result of the life-habits of earthworms, _i. e._, if earth is brought up by them from beneath the surface and afterward spread out by wind and rain, then small objects lying on the surface of the ground would tend to disappear gradually below the surface. Facts seemed to support his theory, for layers of red sand, pieces of chalk, and stones were found to have disappeared below the surface in a greater or less degree. A common explanation had been that heavy objects tend to sink in soft soil through their own weight, but the earthworm hypothesis led to a more careful examination of the data. It was found that the weight of the object and the softness of the ground made no marked difference, for sand and light objects sank, and the ground was not always soft. In general, it was shown that where earthworms were found vegetable mold was also present, and _vice versa_.

In this investigation of Darwin's the conflicting explanations of sinking stones appear within the main question of the formation of vegetable mold by earthworms. The facts that disagreed with the old theory about sinking stones were approached through this new one. But the theories had something in common, viz., the disappearance of the stones or other objects: they differed in their further determination of this disappearance. In this case it may seem as if the facts which were opposed to the current theory of sinking stones were seen to be discrepant only after the earthworm hypothesis had been advanced; the conflict between the new facts and the old theory appears to have arisen through the influence of the new theory.