There are no lossless transformations of natural-language text

Simon Willison highlights the concept that “there are no lossless transformations of natural-language text,” meaning any AI-driven rewrite or rephrase will inevitably alter or lose some of the original intended meaning.
He emphasizes Sophie Alpert’s “internal policy on acceptable use of AI writing by engineers,” particularly the crucial rule: “You must stand behind every idea and every sentence in your docs.”
A practical takeaway is that if you use LLMs to help with writing, you are fully responsible for ensuring the entire document genuinely represents your own thoughts, and you cannot blame AI for any confusion or misrepresentation.