Not alone in the direction of growth given to vulgar sentiment and to the vulgar insight into facts is the matter-of-fact discipline of the machine technology apparent, but also in the scope and method of that scientific knowledge that has had the vogue since the advent of the machine industry. Scientific inquiry is directed to a different end and carried out under the guidance of a different range of principles or preconceptions in the modern industrial communities than in earlier days or in cultural centres lying outside the machine's dominion. Modern science is single-minded in its pursuit of impersonal relations of causal sequence in the phenomena with which it is occupied.
The line of descent of this matter-of-fact modern science is essentially British, as is that of the machine technology and of the characteristically modern civil and political institutions. It is true, beginnings of the modern scientific movement were made in Italy in the days of the Renaissance, and Central Europe had its share in the enlightenment; but these early modern risings of the scientific spirit presently ran into the sand, when war, politics, and religion reasserted their sway in the south of Europe. Similar tentative stirrings of matter-of-fact thought were had in Spain and France before and during the early phases of the state-making era; but here, again, war and politics rendered these onsets nearly nugatory, so that the intellectual output was more speculation than science. In the Low Countries something similar holds true, with a larger qualification. The British community made a later and slower start, coming out of barbarism at a later date and with a heavier handicap of physical obstructions. But being, relatively, sheltered from war and politics, the British were able to take up the fund of scientific gains made by the South-European men of workday insight, to turn it to account and to carry it over the era of state-making and so prepare the way for the modern scientific, technological era.
Of course, nothing but the most meagre and sketchiest outline of this matter is practicable in this place, and even that only in its relation to the machine industry during the past one hundred years or so. What is said above of the British lead in modern science may perhaps be questioned, and it is not necessary for the present purpose to insist on its truth; but so much seems beyond hazard as that the lead in the material sciences lay with the British through the early machine age, and that the provenance of this modern scientific research to-day does not extend, in any pronounced degree, beyond those communities that lie within the area of the modern machine industry.
In time and space the prevalence of the modern materialistic science is roughly extensive with that of the machine process. It is, no doubt, related to it both as cause and as effect; but that its relation to modern industry is more that of effect than cause seems at least broadly suggested by the decay which presently overtook scientific research, e.g., in the south of Europe when those peoples turned their attention from material to spiritual and political affairs.158
What is of immediate interest is the change that has come over the scope and method of scientific research since the dominance of the machine process, in comparison with what preceded the coming of the machine age. The beginnings of modern science are older than the industrial revolution; the principles of scientific research (causal explanation and exact measurement) antedate the regime of the machine process. But a change has taken place in the postulates and animus of scientific research since modern science first began, and this change in the postulates of scientific knowledge is related to the growth of the machine technology.
It is unnecessary here to hark back to that scholastic science or philosophy that served as an intellectual expression of the ecclesiastical and political culture of the Middle Ages. Its character, as compared with later science, is sufficiently notorious. By the change from scholastic knowledge to modern science, to the extent to which the change was carried through, the principle (habit of mind) of adequate cause was substituted for that of sufficient reason. The law of causation as it is found at work, in the maturer science of the eighteenth and early nineteenth centuries, comprises two distinguishable postulates: (1) equality (quantitative equivalence) of cause and effect; and (2) similarity (qualitative equivalence) of cause and effect. The former may, without forcing it, be referred to commercial accountancy as its analogue in practical life and as the probable cultural ground out of which the habit of insisting on an inviolable quantitative equivalence gathered consistency. The ascendancy of the latter seems in a similar manner to be referable to the prevalence of handicraft as its cultural ground. Stated negatively, it asserts that nothing appears in the effect but what was contained in the cause, in a manner which suggests the rule that nothing appears in the product of handicraft but what was present in the skill of the artificer. "Natural causes," which are made much of in this middle period of modern science, are conceived to work according to certain "natural laws." These natural laws, laws of the "normal course" of things, are felt to tend to a rational end and to have something of a coercive force. So that Nature makes no mistakes, Nature does nothing in vain, Nature takes the most economical course to its end, Nature makes no jumps, etc. Under this law of natural causation every effect must have a cause which resembles it in the particular respect which claims the inquirer's attention. Among other consequences of this view it follows that, since the details as well as the whole of the material universe are construed to show adaptation to a preconceived end, this "natural order" of things must be the outcome of preexistent design residing in the "first cause," which is postulated by virtue of this imputed design and is designated the "Great Artificer." There is an element of conation in this original modern postulate of cause and effect. The shadow of the artificer, with his intelligence and manual skill, is forever in the background of the concepts of natural law. The "cause" dealt with in a given case is not thought of as an effect; and the effect is treated as a finality, not as a phase of a complex sequence of causation. When such a sequence is under inquiry; as in the earlier, pre-Darwinian theories of evolution, it is not handled as a cumulative sequence whose character may blindly change from better to worse, or conversely, at any point; but rather as an unfolding of a certain prime cause in which is contained, implicitly, all that presently appears in explicit form.
In the conception of the causal relation as it may be seen at work a hundred years ago, cause and effect are felt to stand over against one another, so that the cause controls, determines the effect by transmitting its own character to it. The cause is the producer, the effect the product. Relatively little emphasis or interest falls upon the process out of which the product emerges; the interest being centred upon the latter and its relation to the efficient cause out of which it has come. The theories constructed under the guidance of this conception are generalizations as to an equivalence between the producing cause and the effect-product. The cause "makes" the effect, in much the same sense as the craftsman is apprehended to make the article on which he is engaged. There is a felt distinction between the cause and the environing circumstances, much as there is between the workman on the one hand and his tools and materials on the other hand. The intervening process is simply the manner of functioning of the efficient cause, much as the workman's work is the functioning of the workman in the interval between the inception and the completion of the product. The effect is subsequent to the cause, as the workman's product is subsequent to and consequent upon his putting forth his productive efficiency. It is a relation of before and after, in which the process comes in for attention as covering and accounting for the time interval which, in analogy with workmanlike endeavor, is required for the functioning of the efficient cause.159
But as time passes and habituation to the exigencies of the machine technology gains in range and consistency, the quasi-personal, handicraft conception of causation decays, - first and most notably in those material, inorganic sciences that stand in the closest relation to the mechanical technology, but presently also in the organic sciences, and even in the moral sciences. The machine technology is a mechanical or material process, and requires the attention to be centred upon this process and the exigencies of the process. In such a process no one factor stands out as unequivocally the efficient cause in the case, whose personal character, so to speak, is transfused into the product, and to whose workings the rest of the complex of causes are related only as subsidiary or conditioning circumstances.
