For a considerable number of years there has been much discussion by both college teachers and practicing engineers concerning differentiation in engineering curricula; and the usual conclusion is that undue differentiation is detrimental. But nevertheless specialization has gone on comparatively rapidly and extensively—as shown in the previous article. Since the degree of differentiation determines in a large measure (1) the spirit with which a student does his work, (2) the method of teaching that should be employed, and (3) the results obtained, it will be wise briefly to consider the merits of specialization. The arguments against specialization have been more widely and more earnestly presented than those in favor of specialization. The usual arguments pro and con may be summarized as follows:
1. It is frequently claimed that the undergraduate is incapable of wisely choosing a specialty, and that hence specialization should come after a four-year course,—i.e., in the graduate school or by self-instruction after graduation. But the parents and friends of a student usually help him in deciding upon a profession or on a special line of study, and therefore it is not likely that a very serious mistake will be made. Of necessity a decision must be made whether or not to seek a college education; and a decision must also be made between the great fields of knowledge,—liberal arts, agriculture, engineering, etc. If the student decides to take any branch of engineering, he usually has his whole freshman year in which to make a further specialization. At the end of the sophomore year the specialization has not gone very far; and therefore if the student finds he has made a mistake, it is not difficult to change.
2. "The undergraduate seldom knows the field of his future employment, and hence does not have the data necessary for an intelligent decision." The young man will never have all of the data for such a decision until he has actually worked in that field for a time, and there is no reason why he should not make a decision and try some particular line of preparation.
3. Some opponents of specialization claim that the more general the engineering training, the easier to obtain employment after graduation; but this is not in harmony with the facts. The opposite is more nearly true. For example, who ever heard of a practicing engineer preferring a liberal arts student to a civil engineering student as a rodman?
4. Specialized courses require that the college should have larger equipment and a more versatile staff. The larger institutions can prepare for specialized sections nearly as easily and cheaply as for duplicate sections; and institutions having only a few students or meager financial support should not offer highly specialized courses.
5. The opponents of specialization claim that to be a successful specialist one should have a broad training, and that therefore the broader the curriculum the better. It is true that to be a successful specialist requires a considerable breadth of knowledge, but that does not prove that the student should be required to get all of his general knowledge before he gives attention to matters peculiar to his specialty. No engineer can be reasonably successful in any field with only the knowledge obtained in college, whether that be general or special.
6. It is claimed that specialization should be postponed to a fifth year. It seems to have been settled by experience that four years is about the right length of the college course for the average engineering student, and that in that time he should test his fitness and liking for his future work by studying some of the subjects relating to his proposed specialized field.
7. The chief reason in favor of specialization is that the field of knowledge is so vast that it is absolutely necessary for every college student—engineering or otherwise—to specialize; and in engineering this specialization is vitally important, since fundamental principles can be taught most effectively in connection with their application to specialized problems. In no other way is it possible to invest theoretical principles with definite meaning to the student, and by this process it is possible to transform abstract theory into glowing realities which under a competent teacher arouse the student's interest and even his enthusiasm.
8. Specialization in engineering curricula is a natural outgrowth of the evolution of engineering knowledge, and is in harmony with sound principles of teaching. For example, all engineering students should have a certain amount of mechanical drawing; but the best results will be obtained if the civil engineer, after a study of the elementary principles, continues his practice in drawing by making maps, while the mechanical engineer continues his by making details of machinery. Both will do their work with more zest and much more efficiency than if both were compelled to make drawings which meant nothing to them except practice in the art of drawing. Similar illustration can be found throughout any well-arranged engineering curriculum. A vitally essential element in any educational diet is that the subject shall not pall upon the appetite of the student. He should go to every intellectual meal with a hearty gusto. The specialized course appeals more strongly to the ambition of the student than a general course. The engineering student selects a specialized course because he has an ambition to become an architect, a chemical engineer, a civil engineer, or perhaps a bridge engineer, a highway engineer, a mechanical engineer, or perhaps a heating engineer or an automobile engineer; and having an opportunity to study subjects in which he is specially interested, he works with zest and usually accomplishes much more than a student who is pursuing a course of study only remotely, if at all, related to the field of his proposed activities after leaving college. Further, the more specialized the course, the greater the energy with which the student will work.
Many of those who have discussed specialization seem to assume that the only, or at least the chief, purpose of an engineering education is to give technical information, and that specialization is synonymous with superficiality. From this point of view the aim of a college education is to give a student information useful in his future work, and the inevitable result is that the student has neither the intellectual power nor the technical knowledge to enable him to render efficient service in any position in which he will work whole-heartedly. The weakness and superficiality of such a student, it is usually said, is due to excessive specialization, while in reality it is primarily due to wrong methods of teaching. Within reasonable limits specialization has little or nothing to do with the result; and under certain conditions, as previously stated, specialization helps rather than hinders intellectual development. If a subject has real educational value and is so taught as to train a student to see, to analyze, to discriminate, to describe, the more the specialization the better; but if a subject is taught chiefly to give unrelated information about details of practice, the more the specialization the less the educational value.