The single reason why some people can't write, according to a Harvard psychologist

"Why is so much writing so hard to understand? Why must a typical reader struggle to follow an academic article, the fine print on a tax return, or the instructions for setting up a wireless home network?"

These are questions Harvard psychologist Steven Pinker asks in his book, The Sense of Style: The Thinking Person's Guide to Writing in the 21st Century. They're questions I've often encountered--and attempted to tackle--throughout my career as a business writer and editor. Whenever I see writing that is loaded with jargon, clichés, technical terms, and abbreviations, two questions come immediately to mind. First, what is the writer trying to say, exactly? And second, how can the writer convey her ideas more clearly, without having to lean on language that confuses the reader?

For Pinker, the root cause of so much bad writing is what he calls "the Curse of Knowledge", which he defines as "a difficulty in imagining what it is like for someone else not to know something that you know. The curse of knowledge is the single best explanation I know of why good people write bad prose."

"Every human pastime--music, cooking, sports, art, theoretical physics--develops an argot to spare its enthusiasts from having to say or type a long-winded description every time they refer to a familiar concept in each other's company. The problem is that as we become proficient at our job or hobby we come to use these catchwords so often that they flow out of our fingers automatically, and we forget that our readers may not be members of the clubhouse in which we learned them."

People in business seem particularly prone to suffering from "the Curse of Knowledge." They're exposed to an alphabet soup of technical terms, jargon, and acronyms at work--or even earlier at college or business school--which they deploy in their day-to-day interactions with others. These insider terms and abbreviations serve as a dialect that people use to communicate their ideas in writing, from email and chat apps to business proposals and group presentations.

"How can we lift the curse of knowledge?" asks Pinker. "A considerate writer will...cultivate the habit of adding a few words of explanation to common technical terms, as in 'Arabidopsis, a flowering mustard plant,' rather than the bare 'Arabidopsis.' It's not just an act of magnanimity: A writer who explains technical terms can multiply her readership a thousandfold at the cost of a handful of characters, the literary equivalent of picking up hundred-dollar bills on the sidewalk."

"Readers will also thank a writer for the copious use of for example, as in, and such as, because an explanation without an example is little better than no explanation at all."

Whenever I write a sentence that makes me pause and wonder about its meaning, I assume that other readers might react in the same way. If a sentence is not clear to me, it might not be clear to others. It's an approach that I recommend to anyone who is trying to improve his or her writing.

Certainly, there's no one-size-fits-all solution to this problem. If you're writing a scientific paper on, say, DNA editing, then you'll need to use all of the relevant scientific terminology you have at your disposal. For writing that is intended for a broader audience, however, you'll want to make it as accessible as possible. And there are several ways you can do that: Use fresh language over clichés; use simpler, clearer language rather than industry jargon; spell out acronyms. And more. 

Before hitting publish and sending your writing out to the world, be honest with yourself about how much your reader is likely to understand a given passage or sentence. Before you commit your writing to print--or to the internet--take a few moments to make sure that what you write is clear and understandable by as many of your intended readers as possible.

As Richard Feynman, the Nobel prize-winning physicist, once wrote, "If you ever hear yourself saying, 'I think I understand this,' that means you don't."

What do you do about writing that's unclear or inaccessible to others outside of a small circle of professionals? Share your thoughts in the comments.

Thanks for reading! If you'd like to learn how to become a better writer, listen to my podcast, Write With Impact, available on Apple Podcasts. Please reach out and connect with me here on LinkedIn.

This article also appeared on Inc.com.