Psychohistorian comments on The Second Best - Less Wrong

13 Post author: Wei_Dai 26 July 2009 10:58PM

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Comment author: conchis 27 July 2009 02:48:43AM *  5 points [-]

By way of clarification: it is easy to oppose individual Pareto-efficient distributions... it's more difficult to oppose every Pareto-efficient distribution.

E.g. if the possible distributions are (10,0), (9,9) and (9,10), it's pretty easy to oppose (10,0) even though it's Pareto-efficient. Indeed, many people would rank (9,9) above (10,0) even though (9,9) is Pareto-inefficient. But it's tougher to prefer (9,9) to (9,10).

Of course, there are probably strong egalitarians who would prefer (9,9) to (10,9). Are such people necessarily crazy?

Comment author: Psychohistorian 27 July 2009 07:01:15AM 2 points [-]

I'd think the more realistic egalitarian opposition would be between, say, (100, 35) and (50,34), i.e. the very rich getting even richer while the poor stay still. There are probably a few who would hold the (10,9) < (9,9), but that's much less realistic.

The real problem with PE is that it specifically determines the "fairness" of a marginal transaction, not the fairness of the actual distribution.