"To trace something unknown back to something known is alleviating, soothing, gratifying and gives moreover a feeling of power. Danger, disquiet, anxiety attend the unknown - the first instinct is to eliminate these distressing states. First principle: any explanation is better than none... The cause-creating drive is thus conditioned and excited by the feeling of fear..." Friedrich Nietzsche

"Any explanation is better than none." And the simpler, it seems in the investment game, the better. "The markets went up because oil went down," we are told, except when it went up there was another reason for the movement of the markets. We all intuitively know that things are far more complicated than that. But as Nietzsche noted, dealing with the unknown can be disturbing, so we look for the simple explanation.

"Ah," we tell ourselves, "I know why that happened." With an explanation firmly in hand, we now feel we know something. And the behavioral psychologists note that this state actually releases chemicals in our brains that make us feel good. We become literally addicted to the simple explanation. The fact that what we "know" (the explanation for the unknowable) is irrelevant or even wrong is not important to the chemical release. And thus we look for reasons.

How does an event like a problem in Greece (or elsewhere) affect you, gentle reader? And I mean, affect you down where the rubber hits your road. Not some formula or theory about the velocity of money or the effect of taxes on GDP. That is the question I was posed this week. "I want to understand why you think this is so important," said a friend of Tiffani. So that is what I will attempt to answer in this week's missive, as I write a letter to my kids trying to explain the nearly inexplicable.

But first, let me note to Conversations subscribers that we have posted a Conversation I recently did with Professors Ken Rogoff and Carmen Reinhart, authors of This Time It's Different, which has my vote for most important book of the last few years.

"To trace something unknown back to something known is alleviating, soothing, gratifying and gives moreover a feeling of power. Danger, disquiet, anxiety attend the unknown - the first instinct is to eliminate these distressing states. First principle: any explanation is better than none... The cause-creating drive is thus conditioned and excited by the feeling of fear ..." Friedrich Nietzsche

This weekend I turn 60 and have been a little more introspective than usual. I am often told that the letter I wrote well over three years ago on ubiquity and complexity theory and the future of the economy was the best letter I have ever done. I went back to read it, and it has aged well. I basically outlined how a financial crisis would unfold, and now it has.

On reflection, I think that there are perhaps other, even larger, events in our future than the recent credit crisis and recession; yet, just as in 2006, there is a great deal of complacency. But as we will see, there are fingers of instability building up that have the potential to create large disruptions, both positive and negative, in our future. And for the political junkies in the room, I offer a brief insight into what may be one of the more intriguing behind-the-scenes developments in recent years. Now, to the letter.

How does the risk of default in California or Thailand get spread throughout the world, causing problem in money market funds in Europe and Florida? Yes, we can trace the linkages now, but was it possible to predict the crisis beforehand? And can we use what we learn to predict and hopefully hedge ourselves from the next crisis? Why do these things seem to be happening with more frequency? This week we are going to look at some economic theories which will give us some insight into the above questions. As it turns out, the more that individuals hedge their risk in economic markets - the larger the network - the more the entire system is put at risk. There is a lot of ground to cover, so we will jump right in.

Before we get to the economic theory, let's review part of a letter I wrote in April of 2006 discussing chaos theory, as it will give us a useful mind picture to understand the latter part of the letter. This was part of a letter where I laid out my thoughts that we would indeed experience a crisis in the future along the lines we are now seeing.

We are going to start our explorations with excerpts from a very important book by Mark Buchanan call "Ubiquity, Why Catastrophes Happen." I HIGHLY recommend it to those of you who like me are trying to understand the complexity of the markets. Not directly about investing, although he touches on it, it is about chaos theory, complexity theory and critical states. It is written in a manner any layman can understand. There are no equations, just easy to grasp well-written stories and analogies. www.amazon.com

"To trace something unknown back to something known is alleviating, soothing, gratifying and gives moreover a feeling of power. Danger, disquiet, anxiety attend the unknown - the first instinct is to eliminate these distressing states. First principle: any explanation is better than none... The cause-creating drive is thus conditioned and excited by the feeling of fear ...." Friedrich Nietzsche

"Any explanation is better than none." And the simpler, it seems in the investment game, the better. "The markets went up because oil went down," we are told, except when it went up there was another reason for the movement of the markets. But we all intuitively know that things are far more complicated than that. But as Nietzsche noted, dealing with the unknown can be disturbing, so we look for the simple explanation.

"Ah," we tell ourselves, "I know why that happened." With an explanation firmly in hand, we now feel we know something. And the behavioral psychologists note that this state actually releases chemicals in our brain which make us feel good. We become literally addicted to the simple explanation. The fact that what we "know" (the explanation for the unknowable) is irrelevant or even wrong is not important to the chemical release. And thus we look for reasons.