https://marketoonist.com/2023/03/ai-written-ai-read.html
How could you possibly tell? I've been playing around with AI detectors, putting in known all-human samples, known all-AI samples, and mixed samples.
The only thing it's gotten right is not marking a human sample as 100% AI (but it marked one of the AI samples as 100% human).
Having such a mark would be a witch-hunt for sure.
https://marketoonist.com/2023/03/ai-written-ai-read.html