That's important evidence, placidchap. It just boggles my mind that I minored in Economics and not once, in intermediate macro and micro, did I come across the huge role speculators are playing in our economy. I'm going to have to research this topic more if I want a fuller understanding of just how our economy works -- this isn't classic supply-and-demand price determination, although the behavior of speculators seems to prematurely push price levels up to their probable long-run trends, at least in oil's case.
EDIT:More interesting commentary:
http://news.yahoo.com/s/ap/20080521/ap_on_bi_ge/oil_pricesInvestors seized on the inventory report to push prices higher Wednesday, but traders interested in pushing prices higher are increasingly picking and choosing which news they wish to pay attention to, analysts say....
The dollar, meanwhile, weakened against the euro Wednesday. Investors see hard commodities such as oil as a hedge against inflation and a weak dollar and pour into the crude futures market when the greenback falls. A weak dollar also makes oil less expensive to buyers dealing in other currencies.
Many investors believe the dollar's protracted decline over the past year has been the most significant factor behind oil's rise from about $66 a barrel a year ago to today's highs.It is as I thought then: like land, oil can be invested in as a value-retaining commodity, though this asset is a little more "liquid" than land. Oh hoh, hoh, just couldn't resist. In any case, an investment in land theoretically drives land prices up because the invested land has been "consumed" in a way, i.e., taken from the market. But I can't believe something as crucial as
oil is diverted from consumers when an investor buys a barrel.
EDIT: Here's another potentially insightful article:
http://www.latimes.com/business/la-fi-traders21-2008may21,0,2916861.story