What exactly is “this”?

The results of this survey showing that humans are no better than a coin flip.

while I agree in theory we could be on par, in practice it matters a lot that things happen in reality.

I didn’t say “on par.” I said we know how. I didn’t say we were capable, but we know how it would be done. With AI detection, we have no idea how it would be done.

Machine learning does that.

No it doesn’t. It speedruns the tedious parts of writing algorithms, but we still need to be able to compose the problem and tell the network what an acceptable solution would be.

Also look at Generative Adversarial Networks (GANs). […] this by definition includes a (specific) AI detector software, it requires it to work.

Several startups, existing tech giants, AI companies, and university research departments have tried. There are literally millions on the line. All they’ve managed to do is get students incorrectly suspended from school, misidentify the US Constitution as AI output, and get a network really good at identifying training data and absolutely useless at identifying real world data.

Note that I said that this is probably impossible, only because we’ve never done it before and the experiments undertaken so far by some of the most brilliant people in the world have yielded useless results. I could be wrong. But the evidence so far seems to indicate otherwise.