Nash equilibrium reconsidered and an option for maximin

In this paper we will discuss some peculiarities of the Nash equilibrium which are at odds with its standard applications: (a) the underlying dynamic interpretation, (b) the incentive independency if equilibria are mixed, and (c) the unprofitability if equilibrium and maximin are mixed and the game is 2-by-2. Maximin is proposed as an alternative solution concept in “relevant situations”.     

An indifference trap of voting

In this paper strategic situations of voting and abstentions are analysed in a three-candidate voting model where voters are indifferent to various alternatives and candidates are interested in winning the election and seeing their most preferred alternative being realized. A specific decision problem is analysed, described by an Indifference Trap Game, with respect to, e.g., the corresponding Nash equilibria, perfect equilibria, and maximin solution. A second-best outcome is contained in the choice set of all three solutions while the Nash equilibrium concept is compatible with the Pareto efficient outcomes of the game.An alternative scenario where candidates suffer from incumbency but voters still are indifferent to some alternatives also supports the second-best outcome. Again, various solutions concepts are applied. We conclude that indifferent voters imply an eminent coordination problem for the candidates in the given voting game which, in general, ends up in inefficient outcomes. The inherent complexity of the decision situation cannot be sufficiently reduced to single out one and only one outcome.     

Abschaffung der Abgeltungsteuer — gerechter und steuersystematisch einheitlicher?

There is a rising political discussion in Germany around abolishing the final withholding tax on capital income. The German tax reforms that introduced this tax lowered tax rates, in particular on interest income. According to some authors, the growing inequality of income and property is a strong argument for the higher taxation of capital income. However, other authors argue that the neutrality aspects concerning private investment are inadequate. An abolishment of the final withholding tax would not solve these problems and, moreover, would turn back the achieved improvements. Therefore, the German Council of Economic Experts suggests complementing the previous reforms by introducing an allowance for corporate equity.