Yes, but they're not part of the interface.
So what?! The first step has been made on the technical side. _No_ step has been made at all on the categorization side.
The technology needs to work with the data - the six million files and their categories, carefully added by hand by humans.
The technology works in principle. But it can never work fully satisfactory with the current categorization scheme.
If category intersections worked,
They do.
Demanding that all six million files be de-categorised before you'll even allow a category intersection tool to *possibly* be deployed is backward.
I never demanded that. Geez. What I want is the commons community pledges support for a change of the categorization system. Putting intersection in the interface before they do is a _waste of time_. I'm asking for them to show the _tiniest_ sign of support. The programmers have already bent over backwards (including me with my own intersection tool)
Of course recategorisation will take time, and so will the deployment of a production quality intersection interface. Stop pretending that either side has to finish all their work first and show a polished end result! That will never work and just stall developments.