As David Letterman and The Onion have proven , the worst of tragedies can be fertile sources of humor , but Lawrence has only a fleeting grasp of how to develop them .
David Lettermanek eta The Onion-ek erakutsi zutenez ... tragedia bateko eszena batzuk barregarriak izan daitezke ... baina Lawrence-ek ez daki hori nola egin.