People were surprised with how much&fast oil climbed in 2008, and more surprised with how much/fast it fell, due to recession. When the recession ends and demand comes back, we are going to be even more suprised with how fast it will climb again to new records. Part of this will be to the reduced spending to bring on new or replace lost production while oil price is low. Now this could take 2-5 years to happen, but a rise to $100 could happen within 2 years with slow recovery. I would sugggest one should never be completely out of oil investments from now on as it can always spike on news.