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Seven tells that make your writing sound like a robot

You write the caption yourself, read it back, and it still sounds like a machine had a go at it. There's an actual list of the reasons, kept by the Wikipedia editors who spend their days deleting AI-written articles. Here are the seven that turn up most, in plain English, with the prompt that catches all of them before you post.

Works in Claude, ChatGPT, or whatever you write in. Nothing to install, nothing to download.

Get the seven tells and the prompt

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The quick version

Where this list came from

Wikipedia editors keep a page called Signs of AI Writing. They keep it because they are removing AI-written articles off the site every single day, so the list comes from people who read thousands of these a week rather than from a marketer having a guess. It is the most tested list of tells I have found anywhere.

One honest note before you go any further, because you will see people claiming otherwise. This will not beat an AI detector. Those tools are unreliable, that same Wikipedia page says so at the top, and anyone selling you a score is selling you something. What this does is different and more useful: it stops your writing sounding like everybody else's, so the words on the page sound like the woman who runs the business.

What gives it away

The seven tells

Read these once and you will not be able to unsee them. Fair warning: you will start spotting them in other people's captions by this afternoon.

1

It says what something isn't, before it says what it is

The most recognisable AI sentence in existence. The first half is scaffolding the machine needed to get going. The second half is the actual sentence. Keep the true half, put a full stop where the comma was, and delete the rest.

BeforeThis isn't about working harder, it's about working smarter.

AfterYou don't need to work harder. You need a system that remembers the things you keep forgetting.

2

Fancy verbs standing in for the word "is"

Watch for serves as, stands as, functions as, represents a, marks a, boasts. Models avoid the plain word "is" because it reads as flat to them. Real people use it constantly, in nearly every sentence, without noticing.

BeforeThe Sunday reset serves as a way to clear your head before the week starts.

AfterThe Sunday reset clears your head before the week starts.

3

A clause bolted onto the end that adds nothing

A comma, then an "-ing" word: highlighting, underscoring, showcasing, reflecting, demonstrating, cementing. It adds significance rather than information. Delete it and check the sentence still says everything you meant. It always does.

BeforeShe built the whole system in a weekend, demonstrating the power of AI for small business owners.

AfterShe built the whole system in a weekend.

4

The words that spike in AI writing

Crucial, pivotal, showcase, comprehensive, underscore, foster, tapestry, testament, myriad, realm, harness, elevate, meticulous, delve, additionally, moreover, furthermore. Every one of them has a plain version you would actually say. Crucial is important. Showcase is show. Comprehensive is full.

BeforeAdditionally, this is a crucial step in fostering a comprehensive approach to your content.

AfterDo this bit first. It saves you the most time.

5

Throat-clearing before the sentence starts

"In today's fast-moving world." "In an era where." "When it comes to your business." It is warming up in front of you instead of starting. Begin at the actual thing you wanted to say, which is usually the second sentence of the paragraph.

BeforeIn today's fast-paced business world, time is your most valuable asset.

AfterYou don't have a spare hour. That's the whole problem.

6

Every sentence the same length

This is the one nobody can name, and it is the strongest tell of the lot. Human writing is lumpy. A long sentence that runs on because you were still thinking while you typed it, then a short one. Machines produce an even, tidy rhythm, and even rhythm is the sound of nobody having said it out loud.

BeforeYour business needs a system that works. A system saves you time every single week. Time is the thing you never seem to have.

AfterYou need a system. Not a fancy one, just something that holds the twelve things currently living in your head, so that at eleven at night you are not the only backup your business has.

7

It's shaped like a slide deck

Bulleted lists with bolded headers and a colon. Headings With Every Main Word Capitalised. An emoji at the start of every line. And lists of three where the third item was clearly reached for, because three has a nicer rhythm than two. These are formatting habits, not a voice. Nobody writes to a friend this way.

BeforeSave time: automate your admin, your inbox, and your calendar

AfterGet the admin off your plate. Start with the inbox, it's the one that eats the morning.

The part you keep

Two prompts that do it for you

The first one is the full pass, for anything that matters. The second is a ten-second check for a caption you are about to post. Paste them into Claude or ChatGPT exactly as they are and drop your draft in where it says.

Prompt one  ·  the full pass
Here's something I've written. Read it back to me the way a good editor would, before you change a word of it. [paste your draft here] First, check it against these tells of AI writing and tell me which ones it's carrying. Quote the exact line every time, so I can see it for myself. 1. Sentences that say what something isn't before they say what it is ("it's not X, it's Y", "not just X but Y", "isn't about X, it's about Y"). 2. Verbs standing in for the word is: serves as, stands as, functions as, represents a, marks a, boasts. 3. A clause bolted onto the end of a sentence that adds importance and no information (", highlighting the", ", underscoring the", ", showcasing", ", demonstrating"). 4. Words that spike in AI writing and rarely come out of a person's mouth: crucial, pivotal, showcase, comprehensive, underscore, foster, tapestry, testament, myriad, realm, harness, elevate, meticulous, delve, additionally, moreover, furthermore. 5. Throat-clearing openers: "in today's", "in an era where", "in a world where", "when it comes to". 6. Every sentence landing at roughly the same length. 7. Formatting habits: bulleted lists with bolded headers, Title Case headings, emoji used as bullet points, and lists of three where the third item was clearly reached for. Then rewrite it. Keep my meaning and keep my own words wherever they already work. Rules for the rewrite: use contractions everywhere. Put "is" back where I've dodged it. Make at least one sentence much shorter than the ones around it. Swap any general noun for the specific real thing (not "your admin", but the school emails I keep meaning to answer). Cut any sentence that only exists for rhythm. And leave it slightly untidy rather than polished, because polish is what gives it away. Give me the rewrite first, then a short list of what you changed and why. Don't add anything I didn't say, and don't make me sound cleverer than I wrote.
Prompt two  ·  the ten-second check
Read this back to me and tell me one thing only: which lines would a real person never say out loud? [paste your caption here] Quote each one, tell me what's wrong with it in a few words, and give me a version I would actually say to a friend. No praise, no summary, nothing else.

Or you stop having to remember

Pasting a prompt works right up until the night you forget. Inside The Unfair Advantage this whole thing is set up as a skill, so it runs on everything you write without you doing anything. It sits in the Systems Library with the rest of the setups I use to run this business myself.

See The Unfair Advantage

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