A racionalidade - dos agentes pode manifestar-se das mais diversas e variadas formas. E as escolhas que, à primeira vista, parecem inconsistentes, afinal não o são.

“For the first time since the return of democracy in 1974, Portugal’s voters have chosen a centre-right president. (…) Yet less than a year ago, José Sócrates, the current prime minister, became the first Socialist to win an overall majority in parliament for his centre-left party. Why a switch from left to right within 12 months? The answer lies in the similarities between Mr. Sócrates and Mr. Cavaco Silva.”

The Economist, January 28th – February 3r