For a publicly quoted company, Eni can play remarkably fast and loose with the numbers. If MEES is somewhat skeptical as to just what is included in Eni’s seemingly too-high Libya gas output numbers (MEES, 13 April) it is because the Italian company has form when it comes to the slippery use of statistics.

Company representatives routinely talk about “barrels” or “barrels per day” on conference calls when discussing output that is largely or wholly gas (Eni...