The failure of market catallactics in no way denies the following truth: given sufficient knowledge the optimal decisions can always be found by scanning over all the attainable states of the world and selecting the one which according to the postulated ethical welfare function is best. The solution 'exists'; the problem is how to 'find' it.

I'm not sure most of the people that get caught up in the middle of a bubble can be described as irrational. It seems pretty rational to buy a house and flip it in the next few weeks at a profit when that's been happening for along time.

What counts is results, and there can be no doubt that the Soviet planning system has been a powerful engine for economic growth...The Soviet model has surely demonstrated that a command economy is capable of mobilizing resources for rapid growth.

Even if this advice to portfolio decision makers to drop dead is good advice, it obviously is not counsel that will be eagerly followed. Few people will commit suicide without a push. And fewer still will pay good money to be told to do what is against human nature and self-interest to do.

Every good cause is worth some inefficiency.

Mea culpa, mea culpa. MIT and Wharton and University of Chicago created the financial engineering instruments, which, like Samson and Delilah, blinded every CEO. They didn't realize the kind of leverage they were doing and they didn't understand when they were really creating a real profit or a fictitious one.

What we know about the global financial crisis is that we don't know very much.