Comparing Incomparable Alternatives when certain intergenerational choice axiom are to be satisfied

Mohamed Mabrouk ()

MPRA Paper from University Library of Munich, Germany

Abstract: Since it has been shown that completeness and constructiveness is an unattainable goal for paretian and anonymous social welfare relations on infinite utility streams,recent contributions generally propose criteria displaying some incomparability. I suggest an interpretation of incomparability which sets a limit to the recourse to the judgment of incomparability when certain intergenerational choice axioms are to be satisfied. It leads to see as incompatible the axioms "fixed step relative anonymity" and "stationarity". This conclusion is obtained thanks to a generalization to infinite dimension of a lemma of D'apremont-Gevers 1977 on the equivalence between relative anonymity and anonymity. It contrasts with Asheim-D'apremont-Banerjee 2008 who build a preorder satisfying both "fixed step anonymity" and "stationarity". The reason of this disagreement is that their result is obtained at the cost of additional judgements of incomparability which are not justified according to the interprettion of incomparability suggested here.

Keywords: intergenerational choice; Comparability; Anonymity; Infinite utility streams; Completeness (search for similar items in EconPapers)
JEL-codes: D63 D71 (search for similar items in EconPapers)
Date: 2009-03-26
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