I’ve been a full-time writer for over 20 years. This much I know. Good writing often looks effortless. But a clear paragraph can represent hours of thinking and rewrites, if not hours more when original reporting, research, and fact-checking are involved.

That said, here are 10 things most people don’t appreciate about good writing.

1. Most writing happens before the words are written. The hardest part is often figuring out what you actually want to say. Once the idea is clear, the sentences usually come quickly. I’ve churned out tomes of information in minutes when everything’s already in my head—more like a mad dash to write it down than deliberating over what to say.
2. Good writing is mostly rewriting. First drafts are rarely good. Strong writers delete, reorganize, simplify, sharpen and rewrite repeatedly. Sometimes the best sentence in a piece appears only after the writer has thrown away several earlier versions. As Hemingway once said, “I don’t write sentences, I constantly edit and rewrite them.”
3. Short writing can be harder than long writing. Getting an idea into 100 words can require more judgment than getting it into 1000. Every unnecessary word becomes visible.
4. Readers don’t know your intent, only your words. A writer might intend a sentence to sound humorous, compassionate, or neutral. If the words produce a different impression, however, the reader’s interpretation is the only thing that matters.
5. Good writing is an exercise in predicting the reader. You constantly have to ask: What will they misunderstand? What context are they missing? What question will they have next? Where will they get bored?
6. Specifics are enormously powerful. “The restaurant was busy” is information. “Every table was occupied, three groups were waiting by the door, and the bartender was taking orders from people standing six deep,” pulls the reader in.
7. Rhythm matters just as much as words. Sentence length, punctuation, phonetics, repetition, and word choice create a musical quality. A paragraph can contain perfectly grammatical sentences and still feel wrong if its rhythm is off.
8. Great writers leave things out. Writing isn’t just adding information. It’s deciding what to omit; what the reader doesn’t need. Removing a sentence can make remaining sentences considerably more powerful.
9. Familiarity is a writer’s worst enemy. When you’ve spent three days researching something, you forget that the reader may know almost nothing about it. In that way, writers become blind to their own assumptions. Good editing helps expose those gaps.
10. Writing forces clearer thinking. This is probably the most underappreciated truth. You can believe you understand something until you try to explain it clearly on paper. Writing forces you to decide what you mean, distinguish facts from assumptions, identify contradictions, and prioritize ideas in a logical order.

Bonus: Good writing and good communication are not the same. You can produce beautiful sentences that communicate poorly. And you can write very plain sentences that communicate extraordinarily well.

The fundamental question isn’t, “Is this good writing?” It’s, “Did the reader understand and experience what I wanted them to?” That’s why some of the world’s most effective writing—great journalism, scientific explanation, poetic fiction, business writing, speeches, and even technical manuals—isn’t necessarily flashy. It just leads the reader to where the writer wants them to be by the last period.