It might be a more tractable question to ask whether the author could have written the text, focusing on evaluating the _author_<p>You might imagine, for example, in an academic context combining an in-person Q&A. Or other non-text modalities that currently still are hard to fake.<p>(In an academic context, people are pretty stupid with their low-effort prompting and copy-pasting, at least when people finely tune their prompt and writing, its a bit of work and thought)

I dont think you can. If you know who “wrote” it though, you might be able to detect it if its drastically different in tone than what they have written in the past (but even then it might have been ghost written)

The ship has sailed.

Turing said there will come a time when you can't!

You can't.