the interest rates structure that has been falling for thirty years, while most observers think that the real danger is inflation. In this second part I carry out a deeper analysis of the pension problem, looking at the marginal productivity of labor and capital and its relevance to the theory of interest. Higher marginal productivity: boon or bane? There is a lot of loose talk about productivity. Paul Krugman is expecting miracles to start happening after an increase in a mythical productivity, provided that government spending is increased to the level matching or exceeding that during World War II. However, as Mises pointed out, productivity is a vacuous concept unless its meaning is fixed, such as that of marginal productivity of labor. Then, and only then, can one state the pension problem. According to Mises, the only means to increase permanently the wages and benefits payable to workers is to increase the per capita quota of capital invested in the methods of production, thereby raising the marginal productivity of labor. (See References, Planning for Freedom, p 6.
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