I have a "saved" history in Google Gemini. The reason I put "saved" in scare quotes is that Google feels free to change the parts of that history that were supplied by Gemini. They no longer match my external records of what was said.
Does ChatGPT do the same thing? I'd be queasy about relying on this as evidence.
1. I engaged with Gemini.
2. I found the results wanting, and pasted them into comment threads elsewhere on the internet, observing that they tended to support the common criticism of LLMs as being "meaning-blind".
3. Later, I went back and viewed the "history" of my "saved" session.
4. My prompts were not changed, but the responses from Gemini were different. Because of the comment threads, it was easy for me to verify that I was remembering the original exchange correctly and Google was indulging in some revision of history.
This would be a major tech news story. "Google LLM rewriting user history" would be a scandal. And since online evidence is used in court, it could have significant legal implications. You'd be helping people.
This is much too important to merely be a comment on HN.
Rewriting history requires computes which is more malicious. Why would someone burn compute to rewrite your stuff given that rewrites are not free? Once again not defending google trying to think through what's going on.
I can't think of any reason it would make sense to do that, though.