Progress and History

by Unknown

X

PROGRESS IN SCIENCE

F.S. Marvin

'L'Esprit travaillant sur les données de l'expérience.'

The French phrase, neater as usual than our own, may be taken as the starting-point in our discussion. We shall put aside such questions as what an experience is, or how much the mind itself supplies in each experience, or what, if anything, is the not-mind upon which the mind works. We must leave something for the chapter on philosophy; and the present chapter is primarily historical. Having defined what we mean by science, we are to consider at what stage in history the working of the mind on experience can be called scientific, in what great strides science has leapt forward since its definite formation, and in what ways this growth of science has affected general progress, both by its action on the individual and on the welfare and unity of mankind.

Our French motto must be qualified in order to give us precision in our definition and a starting-point in history for science in the strict sense. In a general sense the action of the mind upon the given in experience has been going on from the beginning of animal life. But science, strictly so-called, does not appear till men have been civilized and settled in large communities for a considerable time. We cannot ascribe 'science' to the isolated savage gnawing bones in his cave, though the germs are there, in every observation that he makes of the world around him and every word that he utters to his mates. But we may begin to speak of science when we reach those large and ordered societies which are found in the great river-basins and sedentary civilizations of East and West, especially in Egypt and Chaldea.

When we turn to the quality of the thing itself, we note in the first place that while science may be said to begin with mere description, it implies from the first a certain degree of order and accuracy, and this order and accuracy increase steadily as science advances. It is thus a type of progress, for it is a constant growth in the fullness, accuracy and simplification of our experience. From the dawn of science, therefore, man must have acquired standards and instruments of measurement and means of handing on his observations to others. Thus writing must have been invented. But in the second place, there is always involved in this orderly description, so far as it is scientific, the element of prediction. The particular description is not scientific. 'I saw a bird fly' is not a scientific description, however accurate; but 'The bird flies by stretching out its wings' is. It contains that causal connexion or element of generality which enables us to predict.

Before entering on a historical sketch of the most perfect example of human progress, it is of the first importance to realize its social foundation. This is the key-note, and it connects science throughout with the other aspects of our subject. Knowledge depends upon the free intercourse of mind with mind, and man advances with the increase and better direction of his knowledge. But when we consider the implications of any generalization which we can call 'a law of nature' the social co-operation involved becomes still more apparent. Geometry and astronomy—the measurement of the earth and the measurement of the heavens—dispute the honour of the first place in the historical order. Both, of course, involved the still more fundamental conception of number and the acceptance of some unit for measurement. Now in each case and at every step a long previous elaboration is implied of intellectual conventions and agreements—conscious and unconscious—between many minds stretching back to the beginnings of conscious life: the simplest element of thought involves the co-operation of individual minds in a common product. Language is such a common product of social life and it prepares the ground for science. But science, as the exact formulation of general truths, attains a higher degree of social value, because it rises above the idioms of person or race and is universally acceptable in form and essence. Such is the intrinsic nature of the process, and the historical circumstances of its beginnings make it clear. It was the quick mind of the Greek which acted as the spark to fire the trains of thought and observation which had been accumulating for ages through the agency of the priests in Egypt and Babylonia. The Greeks lived and travelled between the two centres, and their earliest sages and philosophers were men of the most varied intercourse and occupation. Their genius was fed by a wide sympathy and an all-embracing curiosity. No other people could have demonstrated so well the social nature of science from its inception, and they were planting in a soil well prepared. In Egypt conspicuously and in Chaldea also to a less extent there had been a social order which before the convulsions of the last millennium b.c. had lasted substantially unchanged for scores of centuries. This order was based upon a religious discipline which connected the sovereigns on earth with the divine power ruling men from the sky. Hence the supreme importance of the priesthood and their study of the movements of the heavenly bodies. The calendar, which they were the first to frame, was thus not only or even primarily a work of practical utility but of religious meaning and obligation. The priests had to fix in advance the feast days of gods and kings by astronomical prediction. Their standards and their means of measurement were rough approximations. Thus the 360 degrees into which the Babylonians taught us to divide the circle are thought to have been the nearest round number to the days of the year. The same men were also capable of the more accurate discovery that the side of a hexagon inscribed in a circle was equal to the radius and gave us our division of sixty minutes and sixty seconds with all its advantages for calculation. In Egypt, if the surveyors were unaware of the true relation between a triangle and the rectangle on the same base, they had yet established the carpenter's rule of 3, 4 and 5 for the sides of a right-angled triangle.

How much the Greeks drew from the ancient priesthoods we shall never know, nor how far the priests had advanced in those theories of general relations which we call scientific. But one or two general conclusions as to this initial stage of scientific preparation may well be drawn.