Robert Fulford explains how being incoherent isn’t enough in academic writing, you also have to "Make simple ideas complicated, and complicated ideas incomprehensible." Or, "The best pomo-babble requires a high level of jargon density. One word or two won’t get you there. You need four key words in any major sentence. In pomo-babble it’s appropriate to praise, for instance, a transgressive challenge to the valorization of hegemonic narrativity." 
This was an apt philosophical quote of the day recently:
"You do pay a price for stating it simply, namely it’s easier for the professionals to misunderstand it."
(John Searle, The Philosophers’ Magazine, Autumn 1999)