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SIMON WILLISON · 12 Aug 2026

There are no lossless transformations of natural-language text

Sophie Alpert outlines an internal policy for how engineers should responsibly use artificial intelligence tools to assist with writing. The core rule requires authors to stand behind every single idea and sentence in their documentation. If a reader asks about a specific line, it is unacceptable to dismiss it by claiming the artificial intelligence wrote it and should be ignored, because presenting unverified text wastes readers' time and causes confusion.

The text emphasizes that there are no lossless transformations of natural language. Every rewrite, rephrasing, or edit alters the original meaning. When artificial intelligence performs these changes without possessing a detailed mental representation of what the author actually intended to communicate, important information is inevitably lost in the process.

Ultimately, authors bear full responsibility for ensuring that any shared document genuinely represents their own thoughts. Using automated writing assistants requires strict oversight so that the final product remains accurate and fully understood by the person whose name is attached to it.

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