ACCUMULATION AND TECHNOLOGY Parallels and Contrasts Karl Marx was one of the few economists who had something useful to say about technical progress.This comes from his interest in the long term development of capitalism, an interest not frequent among economists after the classics, sothat anybody who shared it automatically tended to be regarded as a Marxist. Technological changes go hand in hand with accumulation of capital and both are characteristic for the long term development of capitalism. The accumulation process plays a central and active role in it according to Marx. This vision of accumulation as the driving force was later shared by Schumpeter, Kalecki and Keynes. The ressemblance is incomplete because in Marx there was no clear distinction between investment and saving. The term accumulation tended to cover both, saving and investment seemingly merging^ into one act, so that the priority given later by Kalecki and Keynes to investment did not find great attention; nor did the role of the banking system in the finance of accululation find it either. Even though the view of accumulation of real capital as the driving force was shared by Marx and the authors quoted. The following discussion will refer primarily to the Chapter 23 on the law of capitalist accumulation in Volume I of Capital ( rferences are to the German edition ). I shall make no use of value theory. Market prices will be used rather than labour values; thus I shall speak