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April 10, 2026

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April 10, 2026

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"In the social production of their existence, men inevitably enter into definite relations, which are independent of their will, namely appropriate to a given stage in the development of their material forces of production. The totality of these relations of production constitutes the economic structure of society, the real foundation, on which arises a legal and political superstructure and to which correspond definite forms of consciousness. The mode of production of material life conditions the general process of social, political and intellectual life. It is not the consciousness of men that determines their existence, but their social existence that determines their consciousness. At a certain stage of development, the material productive forces of society come into conflict with the existing relations of production or – this merely expresses the same thing in legal terms – with the property relations within the framework of which they have operated hitherto. From forms of development of the productive forces these relations turn into their fetters. Then begins an era of social revolution. The changes in the economic foundation lead sooner or later to the transformation of the whole immense superstructure. In studying such transformations it is always necessary to distinguish between the material transformation of the economic conditions of production, which can be determined with the precision of natural science, and the legal, political, religious, artistic or philosophic – in short, ideological forms in which men become conscious of this conflict and fight it out. Just as one does not judge an individual by what he thinks about himself, so one cannot judge such a period of transformation by its consciousness, but, on the contrary, this consciousness must be explained from the contradictions of material life, from the conflict existing between the social forces of production and the relations of production. No social order is ever destroyed before all the productive forces for which it is sufficient have been developed, and new superior relations of production never replace older ones before the material conditions for their existence have matured within the framework of the old society. Mankind thus inevitably sets itself only such tasks as it is able to solve, since closer examination will always show that the problem itself arises only when the material conditions for its solution are already present or at least in the course of formation. In broad outline, the Asiatic, ancient,[A] feudal and modern bourgeois modes of production may be designated as epochs marking progress in the economic development of society. The bourgeois mode of production is the last antagonistic form of the social process of production – antagonistic not in the sense of individual antagonism but of an antagonism that emanates from the individuals' social conditions of existence – but the productive forces developing within bourgeois society create also the material conditions for a solution of this antagonism. The prehistory of human society accordingly closes with this social formation."

- Historical materialism

• 0 likes• history• marxism•
"Babbage... had early conceived the notion he picturesquely called "the Engine eating its own tail" by which the results of the calculation appearing in the table column might be made to affect the other columns, and thus change the instructions set into the machine. ...[A]fter a striking mathematical digression into difference functions new to mathematics, and suggested only by the operation of the engine, he built ...a machine capable of carrying out any mathematical operation instead of only the simple routine of differences ...Such a machine would need instructions both by setting in initial numbers, as in the , and also far more generally by literally telling it what operations to carry out, and in what order. [The arithmetic unit was] capable of repeated additions, of multiplication which is hardly more than that, and of reversing the procedure for subraction and division... It would work on previously obtained intermediate results, stored in the memory section... or upon freshly found numbers. It could use auxiliary functions, logarithms, or similar tabular numbers, of which it would possess its own library. It could make judgements by comparing numbers... proceeding upon lines not uniquely specified in advance... carried out wholly mechanically. ...The operation depended upon punched cards... modeled on the already well-worked-out scheme of the . ...[T]he process was elaborately safeguarded against the perils of friction, jamming, and even errors of human attendants..."

- History of technology

• 0 likes• technology• history• history-of-technology•
"Glass... helped to alter the very concept of self. In a small way, glass had been used for mirrors by the Romans; but the background was a dark one, and the image was no more plain than... the polished metal surface. By the sixteenth century, even before the invention of plate glass that followed a hundred years later, the mechanical surface of the glass had been improved to such an extent that, by coating it with a silver amalgam, an excellent mirror could be created. ...For perhaps the first time, except for reflections in the water and in the dull surfaces of metal mirrors, it was possible to find an image that corresponded accurately to what others saw. ...The use of the mirror signalled the beginning of introspective biography in the modern style... The self in the mirror corresponds to the physical world that was brought to light by natural science in the same epoch: it was the self in abstracto... the more accurate the physical instrument, the more sufficient the light on it, the more relentlessly does it show the effects of age, disease, disappointment, slyness, covetousness, weakness... quite as clearly as health, joy and confidence. Indeed, when one is completely whole and at one with the world one does not need the mirror: it is in the period of psychic disintegration that the individual... turns to the lonely image to see what in fact is there and what he can hold on to; and it was in the period of cultural disintegration that men began to hold the mirror up to outer nature."

- History of technology

• 0 likes• technology• history• history-of-technology•
"Although none of the very ancient kilns have survived the destructive influence of time, yet among all the great nations baked earthenware is of the highest antiquity. In Egypt, in the tombs of the first dynasties, vases and other remains of baked earthenware are abundantly found; and in and , the oldest bricks and tablets have passed through the furnace. ...The desire of rendering terra-cotta less porous, and of producing vases capable of retaining liquids, gave rise to the covering of it with a or glaze. The invention of glass has been hitherto generally attributed to the ns: but opaque glasses or enamels, as old as the XVIIIth dynasty, and enamelled objects as early as the IVth, have been found in Egypt. The employment of copper to produce a brilliant blue coloured enamel was very early both in Babylonia and Assyria; but the use of tin for a white enamel, as recently discovered in the enamelled bricks and vases of Babylonia and Assyria, anticipated by many centuries the rediscovery of that process in Europe in the 15th century, and shows the early application of metallic oxides. This invention apparently remained for many centuries a secret among the Eastern nations only, enamelled terra-cotta and glass forming articles of commercial export from Egypt and Phoenicia to every part of the Mediterranean. Among the Egyptians and Assyrians enamelling was used more frequently than glazing..."

- History of technology

• 0 likes• technology• history• history-of-technology•