This conflict is resolved when new production relations replace old ones. This is a law of human history. Only with the enormous development of the productive forces under capitalism does recognition of this law become possible. With this recognition the working class can prepare to fulfil the task of socialism - the destruction of capitalist relations and the construction of a society based upon freely associated people consciously planning production for their needs. Long the object of history, the victim of blind laws, humanity becomes the subject, shaper of the world in fashion with its developing needs and mastery of nature.
Truth is proved in practice.
Theory is tested by reality and its truth is measured in its contribution to human control of nature and society. Freedom is the recognition of necessity. Necessity is blind only in so far as it is not understood. Just as discoveries in Einsteinian physics confirm reality is dialectical, so the crisis of capitalism in the twentieth century confirms the correctness of Marx and Engels' theory that the productive forces have outrun the relations in which they develop and have entered into a final conflict which with them, the outcome of which will determine the fate of humanity.