On 6/13/06, Steve Bennett <stevagewp(a)gmail.com> wrote: I did a lot of the setting up of these categories. IMO, that the category system does not support searches on intersection or subcategory yet is not a good reason to create broken categories. Cameras have multiple attributes, among which are brand, type and format. So there are, e.g. [[Category:Canon cameras]] [[Category:SLR cameras]] [[Category:Digital cameras]] There are other attributes, such as lens mount and series and the like. The problem is: do we really want to create a category that is the intersection of all these attributes and assume that's the only way we want to look at them? Or do we really want to create a category for EACH intersection? E.g. someone might want to look at [[Category:Canon Digital SLRs]]. But they might also want to scan [[Category:Canon EOS cameras]] or [[Category:Canon SLRs]] or [[Category:Digital SLRs]]. Or any other combination of attributes that we hadn't thought of. Better, I think, to fix MediaWiki to support category intersection and sub-inclusion in software. (perhaps this is a problem I should try and address in code?) -Matt