With the new form of production – the manufacter one, that it allowed to an increase of productivity, which had to the increase of new innovations techniques, therefore of this new form of production marks the growth of the capitalist economic system. Something that does not have to leave of being designated is meeting of some workers in one same place, that stops to effect one definitive task productive, with raw materials and tools that they do not belong to them – what in last analysis it synthecizes the plant -, it could have occurred at any time of history if it configured the capitalist system. So that such occurred, two daily pay-conditions had been absolutely necessary: the concentration of the means of production (capital, lands, tools, etc) at the hands of an only social classroom – the bourgeoisie; while the classroom that if it saw excluded of the property of these means of production – the proletariat – was seen obliged to vender the only merchandise that possua: its force of work. This force of work is characterized for the capacity to carry through definitive tasks, in such a way freely, as in the market, in order to guarantee its subsistence. In the truth the capitalism does without the compulsion of the work total. It does not operate its extration of economic excess, nor if appropriating of the producer – as in the slavery -, nor of the work of the producer – as in the senhorial economy. Therefore, the capitalism inside extracts excess of the proper process of production, of a free producer, through the difference of value, that this producer receives for the sales of the merchandise – work force -, in relation to the merchandises that this force of work produces. This form of extration of the economic excess, called more value, makes with that relation does not exist some between the value that the producer receives and the value that it creates.