If it’s a fixed db, not an “artificial sort-of intelligence”.

But that’s a stupid way around it, surely. Child porn is surely, and tragically, in continuous production. And really, it’s the production that is the biggest issue, this is the continued abuse of children. And that’s the one bit the algo won’t match against?

Out of 200k photos being matched against I'd be extremely surprised if there aren't at least some false positives generated.