Ask what a sentence does, not what it says

The people most impressed by AI prose tend to assume words have fixed meanings — that a beautiful pattern of words is the whole of writing. But there's a layer beneath the words: function. "Sales were down 15%" is the same sentence whether it's a problem, a piece of evidence, or background context — which of those it is depends entirely on the job you need it to do in the text. Miss that layer and you produce pages of well-formed words that don't actually do anything for a reader.

How it works

Design each sentence for what it does, not just what it says. Think of every sentence and paragraph as a tile on a path that carries the reader from where they are to where you want them: this one contrasts with the last idea, that one raises the objection a reader is about to have, the next states the problem. Ask of each: what is this doing for my reader? If you can name the job — introducing a problem, conceding a point, delivering the payoff — keep it. If you can't say what job a sentence or paragraph performs, delete it. It's the discipline AI can't apply, because it arranges words in patterns without ever asking what a reader needs done.

Why it matters

When you think only about content, you miss how readers actually process a text, and you end up with sentences that are true, or elegant, but inert. Function is what turns a pile of accurate statements into a path a reader can walk. It's also the sharpest editing test there is: "what does this do?" cuts the material that's merely interesting or true but isn't moving the reader anywhere.

Try it

1. For each paragraph, name its job in a few words — problem, evidence, concession, turn, payoff.
2. If you can't name the job, the paragraph is decoration or a fragment of your thinking; cut it or rebuild it.
3. Check the sequence of jobs, not just the sentences: do the tiles actually form a path from A to B?

Common pitfalls

Keeping a sentence because it's true or well-written — truth and polish aren't functions, and a beautiful sentence doing no job still gets cut. The opposite error is naming a function so vague ("this provides context") that it justifies anything; the job has to be a specific move the reader needs.

The same sentence can perform completely different functions depending on where it's placed. If you can't identify the job of a sentence, delete it.

WILLIAM · THE ULTIMATE GUIDE TO WRITING WITHOUT AI · 2025

Words say. Sentences do. Edit for the doing.

Drawn from

• William, The Ultimate Guide to Writing WITHOUT A.I. (Writer Science, 2025).
• Related: Make moves, not templates, Open every unit with its point, Change the reader, don't express yourself.