Guides

Straight answers about AI writing.

Watermarking, provenance and disclosure attract a lot of confident writing that outruns the evidence. These guides stick to what vendors have actually said, and are clear about where the honest answer is “nobody can tell you that”.

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Claude watermark explained

What Claude's machine-readable marks mean, and what a real edit can and cannot change.

ChatGPT vs Claude vs Gemini: Text Watermarks Compared

Three vendors, three different positions, and a lot of confident writing online that outruns what any of them have actually claimed.

4 September 2026, 6 min read

Do I Have to Disclose AI Writing? Rules by Context

There is no single rule, and anyone who gives you one is guessing. What matters is which of several overlapping regimes you happen to be under.

4 September 2026, 5 min read

AI Content Provenance, Explained Simply

Provenance is the question of where a piece of content came from. Three different technologies attempt an answer, and they fail in different ways.

4 September 2026, 5 min read

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