In my book Iron Hoop I portray a conversation between the local junk man and a crony about how the junk man arranges things in the junk yard. It is a very thinly disguised metaphor about the inherent problems I have with taxonomies.
The one I have a continual problem with and never get around to fixing is my folder arrangement on my computer. I have a folder called Presentations in which I file my PowerPoint presentations. Within that I have some subfolders for specific conferences or organizations.
But I also have peer level folders for those same organizations and conferences to collect documents and correspondence.
You guessed it; I'm inconsistent with where I store PowerPoint presentations and always have to scratch my head and wonder if it is in Presentations\STC or STC\Presentations.
Essentially I'm conflicted between Object\Audience and Audience\Object. I wonder if there is a natural taxonomy that would guide me, some world view that could serve as a model for these kinds of decisions. I've wondered about the Carnegie Mellon food|shelter|handle research, but that's not getting through.
BTW, I used to have a similar dilemma with what goes in the columns and what goes in the rows in designing tables. I think I solved that. See my UXmatters column.