I think the idea that a society has to be responsible for all of its citizens, those who do well and those who do not, is really a precondition of a good society.
Kenneth ArrowIt seems to me that at least as far as the financial markets are concerned, there is increasing evidence against rational expectations, even at the macro level.
Kenneth ArrowThe MD is well aware that the forecasts are no good but he needs them for planning purposes.
Kenneth ArrowIn my [Impossibility] theorem I'm assuming that the information is a ranking. Each voter can say of any two candidates, I prefer this one to this one. So then we have essentially a ranking. It's a list saying this is my first choice. This is my second choice. Each voter, in principle, could be asked to give that entire piece of information. In the ordinary Plurality Voting, say as used in electing Congressmen, we generally only ask for the first choice. But, in principle, we could ask for more choices.
Kenneth Arrow