This copy is for your personal, non-commercial use only. To order presentation-ready copies for distribution to your colleagues, clients or customers visit http://www.djreprints.com. U.S. benchmark crude-oil prices continue to plummet—dropping 40% from October highs. They haven’t found a bottom even though OPEC announced production cuts this month. The rapidity of the decline, coupled with the selloff in the stock market—the Dow Jones Industrial Average was briefly down more than 600 points on Thursday—has left investors wondering if oil is sending an ominous signal about global economic growth. It probably isn’t.