Interesting that this quote really contains "sender" where "recipient" was intended, but it had absolutely no impact on any reader. (I even asked Claude and ChatGPT if they noticed anything strange in the sentence, and both needed additional prompting to spot that mistake.)

https://x.com/sama/status/1631394688384270336

Thanks for this heads-up, by the way, I've missed this particular tweet, but eventually got into exact same observation.

Wow I completely didn’t notice that until I read your comment. My brain must have automatically filled in the correct word. I had to go back and re-read it to confirm.

Well English is not my first language, so I probably tend to go through text more slowly and/or scan the text differently, so I have higher chance stumbling upon these oddities. (I can confirm that sometimes I see unexpected amount of misspelt homophones or usage of strangely related words.) Seeing two distinct LLM chats gloss over this particular nuance in almost identical way was really interesting.

Grok, on the other hand, has absolutely no problem with concept of sender both expanding and compressing the message, and with absence of recipient. Even after super-painstaking discussion, where Grok identified the strange absence of the "recipient", when I asked him to correct the sentence, he simply changed the word "sender" to the word "themselves":

> something very strange about people writing bullet points, having ChatGPT expand it to a polite email, sending it, and *themselves* using ChatGPT to condense it into the key bullet points

https://x.com/i/grok/share/mwFR2jQ9MS6uVemgiHokJKiBd (cringe/pain warning)

Typical English language learner, apologizing for having a better grasp of English than a native speaker.

Google running the "Dear Sydney" ad is in strong disagreement with that claim.