Michael Sigman: I am a mechanical moron, a species to whom Larry David once gave voice when, in the opening scene of a 2009 episode of “Curb Your Enthusiasm,” he exploded with “wrap rage” after a death-struggle with the plastic shell that encased a newly gifted GPS device. The mega-humiliating payoff comes at the end of the episode, when he’s lost and desperately needs to un-package the GPS. But the box cutter he’s sure will do the trick turns out to be so hard to open that it requires a box cutter of its own.