It is possible, without doing violence to the facts, to mark off three fairly typical stages in the growth of subject matter in the experience of the learner. In its first estate, knowledge exists as the content of intelligent ability—power to do. This kind of subject matter, or known material, is expressed in familiarity or acquaintance with things. Then this material gradually is surcharged and deepened through communicated knowledge or information. Finally, it is enlarged and worked over into rationally or logically organized material—that of the one who, relatively speaking, is expert in the subject.

I. The knowledge which comes first to persons, and that remains most deeply ingrained, is knowledge of how to do; how to walk, talk, read, write, skate, ride a bicycle, manage a machine, calculate, drive a horse, sell goods, manage people, and so on indefinitely. The popular tendency to regard instinctive acts which are adapted to an end as a sort of miraculous knowledge, while unjustifiable, is evidence of the strong tendency to identify intelligent control of the means of action with knowledge. When education, under the influence of a scholastic conception of knowledge which ignores everything but scientifically formulated facts and truths, fails to recognize that primary or initial subject matter always exists as matter of an active doing, involving the use of the body and the handling of material, the subject matter of instruction is isolated from the needs and purposes of the learner, and so becomes just a something to be memorized and reproduced upon demand. Recognition of the natural course of development, on the contrary, always sets out with situations which involve learning by doing. Arts and occupations form the initial stage of the curriculum, corresponding as they do to knowing how to go about the accomplishment of ends.

Popular terms denoting knowledge have always retained the connection with ability in action lost by academic philosophies. Ken and can are allied words. Attention means caring for a thing, in the sense of both affection and of looking out for its welfare. Mind means carrying out instructions in action—as a child minds his mother—and taking care of something—as a nurse minds the baby. To be thoughtful, considerate, means to heed the claims of others. Apprehension means dread of undesirable consequences, as well as intellectual grasp. To have good sense or judgment is to know the conduct a situation calls for; discernment is not making distinctions for the sake of making them, an exercise reprobated as hair splitting, but is insight into an affair with reference to acting. Wisdom has never lost its association with the proper direction of life. Only in education, never in the life of farmer, sailor, merchant, physician, or laboratory experimenter, does knowledge mean primarily a store of information aloof from doing.

Having to do with things in an intelligent way issues in acquaintance or familiarity. The things we are best acquainted with are the things we put to frequent use—such things as chairs, tables, pen, paper, clothes, food, knives and forks on the commonplace level, differentiating into more special objects according to a person's occupations in life. Knowledge of things in that intimate and emotional sense suggested by the word acquaintance is a precipitate from our employing them with a purpose. We have acted with or upon the thing so frequently that we can anticipate how it will act and react—such is the meaning of familiar acquaintance. We are ready for a familiar thing; it does not catch us napping, or play unexpected tricks with us. This attitude carries with it a sense of congeniality or friendliness, of ease and illumination; while the things with which we are not accustomed to deal are strange, foreign, cold, remote, "abstract."

II. But it is likely that elaborate statements regarding this primary stage of knowledge will darken understanding. It includes practically all of our knowledge which is not the result of deliberate technical study. Modes of purposeful doing includes dealings with persons as well as things. Impulses of communication and habits of intercourse have to be adapted to maintaining successful connections with others; a large fund of social knowledge accrues. As a part of this intercommunication one learns much from others. They tell of their experiences and of the experiences which, in turn, have been told them. In so far as one is interested or concerned in these communications, their matter becomes a part of one's own experience. Active connections with others are such an intimate and vital part of our own concerns that it is impossible to draw sharp lines, such as would enable us to say, "Here my experience ends; there yours begins." In so far as we are partners in common undertakings, the things which others communicate to us as the consequences of their particular share in the enterprise blend at once into the experience resulting from our own special doings. The ear is as much an organ of experience as the eye or hand; the eye is available for reading reports of what happens beyond its horizon. Things remote in space and time affect the issue of our actions quite as much as things which we can smell and handle. They really concern us, and, consequently, any account of them which assists us in dealing with things at hand falls within personal experience.

Information is the name usually given to this kind of subject matter. The place of communication in personal doing supplies us with a criterion for estimating the value of informational material in school. Does it grow naturally out of some question with which the student is concerned? Does it fit into his more direct acquaintance so as to increase its efficacy and deepen its meaning? If it meets these two requirements, it is educative. The amount heard or read is of no importance—the more the better, provided the student has a need for it and can apply it in some situation of his own.

But it is not so easy to fulfill these requirements in actual practice as it is to lay them down in theory. The extension in modern times of the area of intercommunication; the invention of appliances for securing acquaintance with remote parts of the heavens and bygone events of history; the cheapening of devices, like printing, for recording and distributing information—genuine and alleged—have created an immense bulk of communicated subject matter. It is much easier to swamp a pupil with this than to work it into his direct experiences. All too frequently it forms another strange world which just overlies the world of personal acquaintance. The sole problem of the student is to learn, for school purposes, for purposes of recitations and promotions, the constituent parts of this strange world. Probably the most conspicuous connotation of the word knowledge for most persons to-day is just the body of facts and truths ascertained by others; the material found in the rows and rows of atlases, cyclopedias, histories, biographies, books of travel, scientific treatises, on the shelves of libraries.

The imposing stupendous bulk of this material has unconsciously influenced men's notions of the nature of knowledge itself. The statements, the propositions, in which knowledge, the issue of active concern with problems, is deposited, are taken to be themselves knowledge. The record of knowledge, independent of its place as an outcome of inquiry and a resource in further inquiry, is taken to be knowledge. The mind of man is taken captive by the spoils of its prior victories; the spoils, not the weapons and the acts of waging the battle against the unknown, are used to fix the meaning of knowledge, of fact, and truth.

If this identification of knowledge with propositions stating information has fastened itself upon logicians and philosophers, it is not surprising that the same ideal has almost dominated instruction. The "course of study" consists largely of information distributed into various branches of study, each study being subdivided into lessons presenting in serial cut-off portions of the total store. In the seventeenth century, the store was still small enough so that men set up the ideal of a complete encyclopedic mastery of it. It is now so bulky that the impossibility of any one man's coming into possession of it all is obvious. But the educational ideal has not been much affected. Acquisition of a modicum of information in each branch of learning, or at least in a selected group, remains the principle by which the curriculum, from elementary school through college, is formed; the easier portions being assigned to the earlier years, the more difficult to the later.

The complaints of educators that learning does not enter into character and affect conduct; the protests against memoriter work, against cramming, against gradgrind preoccupation with "facts," against devotion to wire-drawn distinctions and ill-understood rules and principles, all follow from this state of affairs. Knowledge which is mainly second-hand, other men's knowledge, tends to become merely verbal. It is no objection to information that it is clothed in words; communication necessarily takes place through words. But in the degree in which what is communicated cannot be organized into the existing experience of the learner, it becomes mere words: that is, pure sense-stimuli, lacking in meaning. Then it operates to call out mechanical reactions, ability to use the vocal organs to repeat statements, or the hand to write or to do "sums."

To be informed is to be posted; it is to have at command the subject matter needed for an effective dealing with a problem, and for giving added significance to the search for solution and to the solution itself. Informational knowledge is the material which can be fallen back upon as given, settled, established, assured in a doubtful situation. It is a kind of bridge for mind in its passage from doubt to discovery. It has the office of an intellectual middleman. It condenses and records in available form the net results of the prior experiences of mankind, as an agency of enhancing the meaning of new experiences. When one is told that Brutus assassinated Caesar, or that the length of the year is three hundred sixty-five and one fourth days, or that the ratio of the diameter of the circle to its circumference is 3.1415…one receives what is indeed knowledge for others, but for him it is a stimulus to knowing. His acquisition of knowledge depends upon his response to what is communicated.