From: Bob the Wikipedian bobthewikipedian@gmail.com
The question arises, however, of where to draw the rather thick gray line. If you're not sure what I'm talking about, take for instance the famous Renaissance paintings; often innocent at first glance, but perhaps one of the subjects is nude. Perhaps in the background there is a nude individual. Maybe that individual is too tiny to see clearly. Or perhaps it's adorned with nude cherubim around the corners. Or maybe there's a photo of something where in the background you can see a nude sculpture. And that's just the topic of nudity within the scope of the Renaissance art-- it gets worse.
This is precisely the thing that makes it difficult to decide whether to block an image or not.
Whatever system is used, it needs to be a bit more intricate than just "either / or".
Bob,
I agree it needs a large upfront investment in defining categories sensibly.
Photos of genitals attached to live human beings are different from historical paintings, or photos of Greek sculptures. Few if any would want to filter the latter.
But the idea is to use pedestrian descriptions, telling the user exactly what sort of media files are meant.
Andreas