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La coppia Sistema 1 – Sistema 2 resa nota dal duo Kahneman-Tversky \u00e8 spero ben nota a tutti e ventuno i miei lettori. In pratica i due psicologi hanno postulato che noi esseri umani possiamo prendere decisioni in due modi diversi: valutando attentamente i dati che abbiamo a disposizione, oppure “di pancia” (occhei, applicando euristiche che ci fanno risparmiare tempo e si spera diano spesso una risposta non troppo sbagliata). Inutile aggiungere che noi siamo pigri e usiamo quasi sempre le euristiche, a meno che non siamo costretti a fare altrimenti. Ecco: Kahneman, morto ieri, aveva sicuramente meritato il Nobel per l’economia per avere spiegato agli economisti che l’homo oeconomicus non \u00e8 razionale (come pensava Von Neumann) n\u00e9 egoista (come pensava Nash) ma semplicemente frettoloso. 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