Usefulness depends on tractability.

I don't believe that unemployment is all voluntary, by anticipation of future wage movements or this sort of thing. I know you can modify the models by taking into account the indivisibilities, but I don't really think that people are voluntarily unemployed.

Unsolved problems, that's one of the great signs of progress in my opinion.

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.

The switch to the market in Eastern Europe, of course, has not exactly been one of the greatest advertisements for the market. There's no question the socialist system - and I hate to use the word 'socialist,' but I suppose some description of a system in which the state is in control - was breaking down, really collapsing. In these countries, most markedly in Russia itself and in a number of the others, it obviously was based on a tyranny, which is unacceptable even if it were producing good economic results, which it was not.

I am not really inclined to think there is any very effective regulation of the derivative securities markets that would be useful. People who go into it essentially ought to know what risks they're taking and I don't see any useful regulation.

In The United States, the only real change I know has been Instant Runoff, which is usually applied to municipal elections. I see no real improvement. There's another aspect which comes out of the two-party system, which the primary, a funny kind of two-stage election. And people certainly have complained.