Opus 4.7 knows the real Kelsey • Hacker News Board

Re: Opus 4.7 knows the real Kelsey

#281

Post by Smaug123 » Mon, May 04, 2026, 9:14 PM UTC

tadamcz wrote: post #280

Smaug123 wrote: post #215

Earlier quoted context omitted.

Fascinating - I reproduce your failure to have Claude identify you from your writings that are already in the training set. It can identify me from style, writing about something I've never written before ( https://www.lesswrong.com/posts/Jkb4CBB7rf4XYP5eb/claude-kno... , https://news.ycombinator.com/item?id=47814345 ), and I think I'm even more obscure if anything.

Cool! I couldn't reproduce your results, btw. 4 attempts, it answers "Sarah Constantin" in all 4. Is it possible your setup somehow leaks your name (or other identifying information) into the context?

I asked three friends to reproduce it on the same day I did, and they all reproduced it. It does seem to vary over time, which is quite spooky - although the date is part of the Claude system prompt, so one could expect some variance, I guess.

Re: Opus 4.7 knows the real Kelsey

#282

Post by rldjbpin » Tue, May 05, 2026, 2:25 PM UTC

this is like a weird flex moment of stating that you are not famous enough if an AI cannot tell between your writing.

regardless, who stops someone from just rephrasing their messaging with a local LLM before posting online?

another example of an existing field [1] becoming more accessible through some tech.

[1] https://en.wikipedia.org/wiki/Stylometry

Re: Opus 4.7 knows the real Kelsey

#283

Post by forshaper » Tue, May 05, 2026, 10:45 PM UTC

thwarted wrote: post #275

forshaper wrote: post #242

Earlier quoted context omitted.

Growing up on MUDs, people could clock someone on a completely different, graphical game from their text patterns.

Recognizing someone's "fist" and other patterns in their communication is part of traffic analysis. https://en.wikipedia.org/wiki/Traffic_analysis

this? https://en.wikipedia.org/wiki/Telegraph_key#%22Fist%22

Re: Opus 4.7 knows the real Kelsey

#284

Post by littlestymaar » Wed, May 06, 2026, 9:20 PM UTC

TZubiri wrote: post #199

littlestymaar wrote: post #159

Stylometry has existed for decades, and there's no way an LLM is stronger at that job than a specialized piece of software (it's not more realistic than expecting Opus to beat Stockfish at chess). In practice, you've never been anonymous while posting on the internet and AI isn't changing anything on that front. Or rather: if anything, AI can help you become more anonymous than before, since it can be used to hide yo…

What would be an example of such software

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