The Tells of Machine-written Prose

The Tells of Machine-written Prose

How to spot AI written copy tells.

Stop wasting your money on those expensive, glorified spellcheckers that claim to detect machine learning. If you think a subscription to some “AI Detector” software is the secret to how to spot AI written copy, you’re being sold a bill of goods by people who wouldn’t know a well-constructed sentence if it bit them on the invoice. These tools are a coin toss at best, and in my twenty-one years of editing, I’ve learned that the giveaway isn’t a mathematical probability score; it’s the death of the subtext. AI doesn’t have a pulse, and it certainly doesn’t have a point of view.

I’m not here to give you a lecture on algorithms or technical jargon. Instead, I’m going to show you how to look for the “uncanny valley” of syntax—the places where the rhythm goes flat and the logic becomes suspiciously circular. I’ll teach you to identify the specific, hollow patterns that signal a lack of skin in the game, so you can protect your reputation and your bottom line. We’re going to look at this through the lens of a professional editor, focusing on what actually makes a piece of writing feel human.

Decoding Llm Linguistic Markers Before They Drain Your Budget

Decoding Llm Linguistic Markers Before They Drain Your Budget

If you’re paying a freelancer by the word, you’re essentially paying for their perspective, their mistakes, and their unique way of seeing the world. When you start seeing those same predictable word patterns in AI, you aren’t paying for a writer; you’re paying a premium for a glorified autocomplete function. The first thing to look for isn’t a spelling error—it’s a lack of friction. LLM linguistic markers tend to smooth everything out until the prose is offensively polite and structurally hollow. Everything is “delving,” everything is “crucial,” and every conclusion is a tidy, rhythmic summary that feels like a high school essay written by someone who has never actually lived a day in their life.

The real giveaway, however, is the identifying lack of personal anecdote. A human writer will occasionally veer off-track to mention a specific, slightly messy detail that adds texture to a point. AI, conversely, stays strictly within the guardrails of probability. It produces a “perfect” average of everything it has ever read, which results in a sterile, mid-range tone that lacks any real skin in the game. If the text feels like it’s trying too hard to be helpful without ever being interesting, you’re likely looking at a ghost in the machine.

Predictable Word Patterns in Ai That Kill Your Brand Voice

Predictable Word Patterns in Ai That Kill Your Brand Voice

The most immediate giveaway isn’t a spelling error; it’s the sudden, aggressive onset of “polite mediocrity.” AI has a way of smoothing out every sharp edge of a sentence until the prose feels like a lukewarm bowl of porridge. It leans heavily on transition words that no sane person uses in a casual email or a punchy blog post—think moreover, furthermore, or the dreaded in conclusion. These predictable word patterns in AI act as a digital fingerprint, signaling that the text wasn’t crafted by someone with a pulse, but rather assembled by a probability engine trying to guess the next most likely syllable.

Beyond the vocabulary, you have to look at the structural rhythm. Human writing is messy; we use fragments for emphasis. We interrupt ourselves. We vary sentence length to create a cadence that breathes. An LLM, however, tends to produce sentences of uniform, rhythmic length that feel strangely hypnotic and utterly lifeless. When you are detecting machine-generated text, look for that stagnant tempo. If every paragraph follows the same “Statement + Explanation + Summary” template without a single detour into a personal observation or a jagged thought, you aren’t reading a voice—you’re reading an algorithm.

The Red Flags: Five Ways to Tell if You’re Paying for a Human or a Server Farm

  • Look for the “Vibe Vacuum.” AI is terrifyingly polite and structurally perfect, but it lacks what I call “the grit of opinion.” If a piece of copy manages to discuss a controversial or high-stakes topic without ever taking a stance—or worse, by hedging every single sentence with “it is important to consider”—you aren’t reading an expert; you’re reading a statistical average.
  • Watch the “Adjective Bloat.” When I edit a human manuscript, I look for where they’ve used a strong verb. When I edit AI copy, I see a desperate reliance on decorative, hollow adjectives. If every sunset is “radiant” and every challenge is “multifaceted,” the machine is just trying to fill space because it doesn’t actually know what those words feel like.
  • Check the “Logic Leap” Failures. An LLM is a prediction engine, not a reasoning engine. It can write a beautiful sentence that follows the rules of grammar perfectly but makes absolutely no sense in the context of the paragraph above it. If you find yourself reading a sentence and thinking, “Wait, how did we get here?”, it’s because the AI just followed a high-probability word path that led it right off a cliff.
  • The “Mid-Range” Trap. AI lives in the middle of the bell curve. It avoids the idiosyncratic, the slangy, and the rhythmically strange. If the cadence of the prose feels like a metronome—steady, predictable, and utterly devoid of the short, punchy sentences a human uses to make a point—you’re likely looking at a generated output.
  • The Absence of “Skin in the Game.” This is the most important one for my clients to remember. A human writer uses personal anecdotes, specific (sometimes messy) details, and hard-won observations to build authority. AI cannot draw on a lived experience. If the copy feels like it was written by someone who has never actually sat in a room, felt a loss, or managed a budget, it’s because it hasn’t.

The Editor’s Checklist for Avoiding the Synthetic Slop

Stop auditing for grammar and start auditing for “skin in the game”—if the prose lacks specific, lived-in details or an opinion that carries a bit of risk, it’s likely been generated by a machine that has never actually felt the sting of a bad deadline.

Watch for the “rhythm of the average”; AI tends to produce sentences of uniform length and predictable cadence, whereas a human writer knows how to use a short, sharp sentence to punch a point home or a long, winding one to build tension.

Treat AI-generated text as a rough, unpolished first draft rather than a finished product—if you aren’t prepared to spend your hourly rate heavily rewriting the “hallucinated” facts and the bland, beige adjectives, you aren’t saving money, you’re just outsourcing your reputation.

The Cost of Cheap Syntax

“You can spot AI not by its mistakes, but by its terrifying lack of friction; it produces text that is perfectly polished, structurally sound, and utterly devoid of the jagged, human edges that actually make a reader stop and think. If the prose feels like it’s sliding off the page without leaving a single scratch, you aren’t reading a writer—you’re reading a statistical average, and you’re paying a premium for the privilege of being bored.”

Cressida Farrow-Bassey

The Bottom Line on the Ghost in the Machine

At the end of the day, spotting AI isn’t about being a linguistic detective; it’s about recognizing the absence of friction. If you see that suspiciously polished syntax, the repetitive rhythmic cadence, or those mid-tier adjectives that seem to go everywhere and nowhere at once, you aren’t looking at a writer—you’re looking at a statistical probability. We’ve spent the last few sections dissecting how these models strip away the idiosyncratic grit that makes a brand voice feel alive. When you stop paying for the nuance and start paying for the pattern, you aren’t just saving time; you are actively eroding the authority of your own prose.

My advice is to stop worrying about whether the machine can mimic a human and start focusing on whether a human actually bothered to show up. The real danger isn’t the technology itself, but the temptation to settle for “good enough” because the invoice is lower and the turnaround is faster. But in this industry, “good enough” is the fastest way to become invisible. Real writing requires skin in the game—the kind of messy, expensive, and deeply human perspective that a server farm in a warehouse simply cannot replicate. Invest in the voices that have something to lose, because that is the only way to ensure your words actually land.

About Cressida Farrow-Bassey

Writing is a job with rates, deadlines and invoices, and pretending otherwise keeps people poor. I write about what a copy edit actually costs, why your second draft is worse than your first, how a publishing contract really splits the money, and which parts of this trade have quietly stopped paying at all. I have been on both sides of the desk and I will tell you what editors say about manuscripts when the writer is not in the room.