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Paradox of competition in economics names a model of a situation where measures, which offer a competitive advantage to an individual economic entity, lead to nullification of advantage if all others behave in the same way. In some cases the finite state is even more disadvantageous for everybody than before (for the totality as well as for the individual). The term ''Paradox of competition'' ((ドイツ語:Konkurrenzparadoxon)) was coined by German economist Wolfgang Stützel. It is about a case of a rationality trap. Stützel distinguishes three categories of paradoxes of competition:〔Rolf-Dieter Grass, Wolfgang Stützel: ''Volkswirtschaftslehre.'' München 1988, p. 156-165〕 # Circuit paradoxes # Classical paradoxes # Marx paradoxes == Examples == * Advertising: the overall demand for detergent is assumed steady. By advertisement the individual venture can expand its share in market at the expense of its competitors. But if all producers of detergent do the same, their expenses for advertisement rise without gaining higher sales at large, so that profits even decline. * Opening hours: assumed the legislator extends the allowed opening hours by two hours. Now when an individual shop applies that new opening hours, though it has to pay more work, it can gain higher sales and thereby more profit. But if all shops practise the extended opening hours, customers can shop again at other shops with similar supply and the potential sales volume again allocates to all (similar) shops. * Wage policy: for each individual country counts: a state can improve its price competitiveness in comparison with other states by a restrained wage policy. But from that it does ''just not'' follow that all countries (can) improve their competitiveness when they apply restrained wage policy.〔Johannes Schmidt, 2012: ''Sparen – Fluch oder Segen?'' In: (''Normative und institutionelle Grundfragen der Ökonomik: Lehren aus der Krise für die Makroökonomik.'' ) (PDF; 125 kB) p. 12 f.〕 * Current account balance: a current account surplus is to the expense of an others state current account deficit – insofar not all can improve their balance at the same time. On the contrary – if all simultaneously begin to cut down their imports they will have a decline of balance in their current account in the end.〔Wolfgang Stützel in: ''Zins, Kredit und Produktion.'' Tübingen 1952. Einleitung der Herausgebers. p. 9: „Alle Länder wollen () mehr exportieren als importieren. Es ist wieder von vornherein klar, daß sie nicht zum Ziele kommen werden. Grundsätzlich theoretisch gibt es hier zwei Möglichkeiten. Entweder betreiben alle Staaten aktive Exportförderung und lassen die Importe frei: In einem Taumel internationaler Austauschlust wird das Gesamtexportvolumen steigen, ohne daß in summa irgend jemand mehr exportiert als importiert hätte. Oder aber und das ist das Wahrscheinlichere und leider immer wieder historisch Gegebene: Man wird zur Gewinnung eines aktiven Leistungsbilanzsaldos die Importe zu beschränken suchen. Damit kann auch kein Land mehr seinen Export steigern. Im Gegenteil. Das allgemeine Streben nach einer Differenz zwischen Export und Import wird das Gesamtaustauschvolumen kumulativ zurückgehen lassen.“〕 (see also: protectionism in the 1930s: Smoot-Hawley Tariff Act). * Currency devaluation: an individual state with own currency can achieve to lower overseas prices of its export goods by means of currency devaluation. All countries together in total cannot do so.〔Wolfgang Stützel: ''Paradoxa der Geld- und Konkurrenzwirtschaft.'' Aalen 1979. p. 403.〕 If countries undersell each other with devaluations, the danger of currency war grows, consequence of which is a spiral of devaluation. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Paradox of competition」の詳細全文を読む スポンサード リンク
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