Academic writing is notorious for its opaque (sometimes unreadable) prose. This contributes greatly to the common perception that academia is irrelevant to the concerns of the general population, who don't care to puzzle through the stylistic challenges of academic papers to get at the often interesting ideas within. It's a tragedy, because our society would be so much richer if everyone -- not just specialists, not just the people with advanced degrees -- were engaged in the culture of ideas and had access to the latest developments across a variety of disciplines.
I recently found this amusing little program that parodies academic writing:
http://writing-program.uchicago.edu/toys/randomsentence/write-sentence.htm
It's surprising how many of these randomly-generated declarative statements seem to make some semblance of sense. (Of course, the ones that don't are hilariously bad.) What's rather tragic is that a broad swath of society actually believes that all academic writing reads something like this -- and for the most part, they're not wrong.
Obviously, part of the opacity of any academic discipline is a product of the specialized vocabulary required to discuss said discipline -- they need words to describe concepts that might not even exist elsewhere. As the sum total of human knowledge has increased over the centuries, each discipline is now much more specialized than in the past. Newton, for example, could give public lectures about cutting-edge physics and expect to draw sizable crowds that included a diverse swath of of upper and middle class London, the vast majority without formal science training. Today, the equivalent would be a
Brian Greene or
Neil deGrasse Tyson lecture -- which seems to appeal to a more niche audience.
We're seeing something of a reversal of this trend with the online democratization of education (e.g. Coursera, Floating University, Crash Course, SciShow, &c.). So far, that hasn't gained much traction in the realm of written research (though who knows what academic journals will look like in a decade or two?). Given that the audience of said journals consists primarily of other academics, it's unlikely that they'll change drastically. Public outreach, on the other hand, has never looked more promising.