On a uniform turnpike of the third kind in the Robinson-Solow-Srinivasan model

On using McKenzie’s taxonomy of optimal accumulation in the longrun, we report a “uniform turnpike” theorem of the third kind in a model original to Robinson, Solow and Srinivasan (RSS), and further studied by Stiglitz. Our results are presented in the undiscounted, discrete-time setting emphasized in the recent work of Khan-Mitra, and they rely on the importance of strictly concave felicity functions, or alternatively, on the value of a “marginal rate of transformation”, ξσ, from one period to the next not being unity. Our results, despite their specificity, contribute to the methodology of intertemporal optimization theory, as developed in economics by Ramsey, von Neumann and their followers.

After the demise of neoliberalism but not of conservatism, a third developmentalism?

Neoliberalism and developmentalism are the two alternative forms of economic and political organization of capitalism. Since the 2008 global financial crisis we see the demise of neoliberalism in rich countries, as state intervention and regulation increased, opening room for a third historical developmentalism (the first was mercantilism, the second, Fordism). Not only because of major market failures, not only because the market is definitely unable to assure financial stability and full employment, an active macroeconomic policy is being required. Modern economies are divided into a competitive and a non-competitive sector; for the coordination of the competitive sector the market is irreplaceable and regulation as well as strategic industrial policy will be pragmatically adopted following the subsidiarity principle, whereas for the non-competitive sector, state coordination and some state ownership are usually more efficient. Besides, the fact that capitalist economies are increasingly diversified and complex is an argument against the two extremes – against statism as well as neoliberalism – in so far that they require market coordination combined with increased regulation. But the third developmentalism probably will not be progressive as was the second, because the social-democratic political parties are disoriented. They won the battle for the welfare state, which neoliberalism was unable to dismantle, but the competition of low wage developing countries and immigration continue to offer arguments to conservative political parties that defend the reduction of the cost of labor contracts or the or precarization of labor.