IN “Against the Day,” his sixth, his funniest and arguably his most accessible novel, Thomas Pynchon doles out plenty of vertigo, just as he has for more than 40 years. But this time his fevered reveries and brilliant streams of words, his fantastical plots and encrypted references, are bound together by a clear message that others can unscramble without mental meltdown. Its import emerges only gradually, camouflaged by the sprawling absurdist jumble of themes that can only be described as Pynchonesque, over the only time frame Pynchon recognizes as real: the hours (that stretch into days) it takes to relay one of his sweeping narratives, hours that do “not so much elapse as grow less relevant.”

My copy came in the mail yesterday.