Observer: The Deepwater Horizon oil disaster had some awful, undisputed consequences: 11 people died when the BP oil rig exploded on 20 April 2010, and oil poured unchecked into the Gulf of Mexico for 86 days.
After that, however, the picture gets murkier. Hundreds of thousands of people and businesses were affected by the disaster but, as every month goes by, 10,000 more claimants emerge. Tomorrow, lawyers for BP will appear in court in New Orleans to argue that its huge bill for compensation is out of...