I think one of the things we learned from the physicists and also the theoretical biologists is the idea that when you're dealing with very complex systems you're going to get a large variety of behavior which can be interpreted as hill climbing, but hill climbing with a lot of modifications, hill climbing with big jumps occasionally.

Some people say Russia is running at 50 percent of its gross domestic product under that during the Communist period. In fact, none of the countries seems to have recovered the level that they had under communism, although the other countries in Eastern Europe are doing better than Russia and particularly the Czech Republic seems to be doing modestly well. East Germany I can't count because they have a rich uncle. You have economic benefits which have nothing to do with the workings of the system.

The MD is well aware that the forecasts are no good but he needs them for planning purposes.

I think on the efficiency level, not only the distribution level, capitalism is a flawed system. It probably has the same virtues as Churchill attributed to democracy: It's the worst system except for any other. And I think that's right, but it cannot be thought that some unmitigated belief in free markets is a cure even from the efficiency point of view.

One way of looking at Impossibility Theorem is that we proposed some criteria for what a good system should be: what is it you want from a voting system, and impose some conditions. And then ask: can you have a voting system that guarantees that?

The world is changing. We're not really proceeding on a stationary basis.

My research, even before 1972, moved in directions beyond those cited for the Nobel Memorial Prize. Most of it, in one way or another, deals with information as an economic variable, both as to its production and as to its use.