On 12/12/06, Marc Riddell michaeldavid86@comcast.net wrote:
I have been in constant conflict with some who state that it is not only redundant to enter a single Article into both Categories; it is actually against Wikipedia policy. At present, if I enter John Doe into the ŒSuicides by firearm¹ Category only, he does not appear in the ŒDeaths by firearm¹ Category list. Consequently, if I want to call up all persons in the encyclopedia who have died by firearm, I must call up all the subcategory lists and collate them myself.
This has been knocked about a few times, and the latest proposal put forward that I recall was http://en.wikipedia.org/wiki/Wikipedia:Category_intersection which the tech opinion felt might strain the servers, looking at the talk page it appears the tables might take at least several seconds to display. Or something. I don't pretend to understand it, to be honest. I only know it would be a useful feature but it is difficult to practically implement.