TL;DR for AI writing warning signs:
- Use of the em-dash (—)
- Parallel sentence structure (e.g. “It’s not just X, it’s Y”)
- Grouping things in threes or at least odd numbers
- Delineating line breaks with emojis
- Odd/unnatural verbiage
- Overuse of filler words (talking like your average LinkedIn post)
- Exaggerated and empty praise
- Weird analogies and similes
- Restating and overclarifying points
TL;DR for signs something was written by a human:
- Including anecdotes
- Written in the first person
- Tangents and nonlinear storytelling


Good luck, the next rounds of training will iron these out and the line will continue blurring. These tips will flag a lot of false positives from educated people, and those comments are valuable. Maybe if you look for human-style mistakes you will have hope determining if comment was made by a human, like capitalisation, autocomplete issues, and typos.
It’s much easier spotting AI in photos, videos and probably audio.
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