I wonder how we'd test for AI contamination. And would there be attempts to sell a larger data set, one that pretends to be human generated, but instead is padd

I wonder how we'd test for AI contamination. And would there be attempts to sell a larger data set, one that pretends to be human generated, but instead is padded with some AI content. Does this mean we'd end up with a finite set of verified human only data? Would people start going through all kinds of offline archives via AI-gapped means, trying to uncover and document new sources of human input?