Best oil pricing explanation I’ve seen so far

This article does the best job I’ve seen in explaining the mechanics of oil pricing. Now, it does NOT go into the assumptions that oil traders made that ran us up to $90/bbl. Neither does it explain why prices at the pump react so quickly to world news when the price of a barrel of oil is bought and sold as a *future*, not in real-time.  However, it does a wonderful job of spelling out the mechanics of the oil buying cycle, and what’s been going on in the market with inventories.