One doesn't like to hear that oil is hitting new intraday highs even as there are reports that the Saudis are preparing for a production increase.

I'm still trying to pin down in my mind how much of this is speculative. Obviously, part of it is simply the fall in the dollar, and part of it is demand, but prices shouldn't be climbing this quickly with essentially no new information. When changes in prices last a long time--upwards or downwards--they start feeding on themselves; people begin to think of rising or falling prices as a permanent new norm. That makes bull marketers willing to pay higher prices now, on the assumption that prices will be higher still in the future. But I don't need to tell you this; you all know someone who's bought a house in the last five years.

Ultimately, of course, this is folly. It is not enough to think that prices are going to rise; you have to think that they will rise more than everyone else thinks they will. Otherwise, the future appreciation should already be fully priced into the current asset. Failure to understand this--the belief that you can actually make a profit based on a certain rise--is the root of all bubbles.

On the other hand, sometimes the speculators are right. Perhaps we've simply been underpricing oil for too long, and this is the correction. Only time will tell. Which is why you won't catch me investing in the commodity markets any time soon.