All the existing ways of production looked useful effect of the work, but they did not make measurements of the consequences. Read more here: Wells Fargo Bank. Fact demonstrated in the analyses of Engels is still the division in certain measured of the population in all the ways of production in different classrooms. As Mr. slave; Nobleman and Servant; dominant and oppressed. Today we see the bourgeoisie (rich) and the proletariat (poor), that detainer of the private property, means of production, it I deal and of the consumption and this detainer of the work force, good transformed into merchandise to be ' ' livremente' ' commercialized. On this estimated, we can explicitar here the theory of the value developed for Marx, who in general lines is the perception of the alive work as possessing of value of use and exchange, this existing one why it exists of use and that one in turn, why it has potentially alive work (employed force of work) During its appearance since the French Revolution as appropriation ideological politics and industrial Revolution as economic appropriation and the two as historical development, perceived logical it of the accumulation on value of the work and the priorizao of the economic growth in an increasing wave of globalization and mundializao of the capital, at moments exacerbado in detriment of the life, of the quality of life for all and of the rights proclaimed for the proper bourgeois revolution (French). known the inerncia of the crises of the capital well, for its contradictory nature, where it accumulates wealth and it produces in gigantic scales more misery. It was for crises as these that we know moments of century XX that each time more in shorter spaces of time we perceive the strategies of the capital to continue dominating and to surpass its abalos. The examples, the 1929 crisis, the crisis of 1970 and the current crisis.