Meanwhile, the capitalist learns by experience that if the workers are so organised as to co-operate with one another, the productivity of labour increases. From this arises the mode of labour which Marx calls Co-operation, or a reorganisation of the workplace, which raises the entire production of commodities to a higher level. The co-operation of the workers in the process of production soon leads to the discovery that, if the worker does not himself create the whole product, but only a part thereof, he loses less time and becomes quicker and more skilful in his work and produces more than previously. This discovery leads to the "division of labour," which indeed reduces the worker to the position of an automaton, or a living machine, but considerably augments commodity wealth. Division of labour again demands finer tools; mechanical problems arise to be solved by mechanicians and engineers. This favours the progress of mechanics. The growing commodity wealth, and the pressure to realise it profitably, renders necessary more extensive markets; the need for extension comes up against transport difficulties; transport problems arise, to be solved by road and canal engineers. The increasing variety of the labour process and the categories of commodities which are produced results in new metallurgical, physical, and chemical problems. Natural science flourishes. Meanwhile, things are not so peaceful in the places of manufacture. The lengthening of labour the closer strain on their nerves and muscles, as well as the arrangement of the work, cause the workers to combine and struggle for improved conditions of labour. This struggle, together with the progress of natural science, of technology, and the expansion of markets, result in the discovery of machine technology, of steam and electricity, the foundation of large-scale industry. The capitalist is impelled, on the one hand, to make himself as independent as possible of living labour-power; on the other hand, to increase the volume of his profits. The means thereto are offered him by the new technical discoveries. Those workers who still possessed some pride in handicraft, or as expropriated small peasants were not able to submit to factory discipline, and showed themselves rebellious, were partly replaced by the labour of women and children, and partly curbed and made pliable. The labour time is repeatedly lengthened, and the exploitation of the labour of women and children assumes terrible proportions. The wage worker, who entered into the manufacturing premises of the employer full of the pride of his calling and often with his own tools, became then a small cog in a gigantic, relentless piece of working machinery.