Lapidus is cautious about whether or not Airbus should reengine the A380 as Emirates has proposed. “It is difficult to see there is a compelling argument for reengining,” he says. Lapidus believes the A380 will still have the lowest unit costs even after entry into service of the A350-1000 and the Boeing 777-8/9. On the other hand he concedes that “in some distant future it is a possibility.”