Admin, please changed "Roman Catholic Church" to just "Catholic Church." This is more accurate since "Roman Catholic" means only the Latin Church and the project encompasses East & West. CanonLawJunkie (talk) 15:09, 14 August 2010 (UTC)
Catholicism 101 was not formed from the Christianity project. Dominick (TALK) 17:59, 14 May 2006 (UTC)
If one interprets "is a subproject of" to mean "spawned from" or "spun off from", then the above comment is germane. However, if one interprets "is a subproject of" to mean "is logically a subordinate component of" based on the inherent epistemological structure of the two concepts "Catholicism" and "Christianity", then it would make sense to have "WikiProject Catholicism" be a subproject of "WikiProject Christianity".
We have defined WP:AZTEC to be a subproject of WP:MESO which is a subproject of WP:Pre-Columbian. That's not a chronological ordering, it's a logical (epistemological) ordering.
The text of Template:WikiProject makes a plea that WikiProjects not be "orphans". I think this is an unnecessary concern. There is some value in indicating the logical hierarchial relationships between WikiProjects but I'm not sure that doing so is as important as the author of the WikiProject template seems to think it is.
Thus, I don't much care whether or not the logical relationship of Catholicism and Christianity is embodied in the descriptions of the two projects since it is really a second-order issue. So I'll not work very hard to push my POV on this one.