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Data of the day 7/10
28 ideas, 2+ times

Twenty-eight discoveries in economic theory were made at least twice independently, from Ricardo to the CAPM.

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12 multiples complete within five years, 16 rediscoveries take 8 to 96

28 discoveries in economic theory, 83 independent discoverers. Blue: cluster (≤5 years); grey: rediscovery.

17501800185019001950Differential rent5 · 38 yrsQuantity theory, paper money2 · 49 yrsCumulative process of prices2 · 96 yrsComparative advantage4 · 3 yrsTheory of the firm3 · 95 yrsMarginal productivity6 · 51 yrsMarginal utility4 · 20 yrsGeneral equilibrium of exchange2 · 18 yrsPareto optimum3 · 53 yrsDifferentiated duopoly2 · 44 yrsAccelerator2 · 8 yrsSubstitution and income effects3 · 19 yrsExchange-rate overshooting2 · 55 yrsRamsey rule2 · 24 yrsCobweb theorem3 · 0 yrsMacrodynamic models2 · 0 yrsFactor-price equalisation2 · 15 yrsIS-LM3 · 0 yrsLinear programming3 · 8 yrsMean-variance portfolio3 · 12 yrsBalanced-budget multiplier3 · 2 yrsExistence of general equilibrium3 · 0 yrsConsumption and long-run income2 · 3 yrsNeoclassical growth2 · 0 yrsGolden rule6 · 3 yrsCAPM4 · 5 yrsRandom speculative prices2 · 1 yrsOption pricing3 · 0 yrs
 

List based on Niehans (1992) and the atlas sources; historians debate the independence of some cases.

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