You might find this interesting. One point that goes back to your “Why we need librarians” post:

I brought up with Tim the issue of whether order mattered with tagmashing.

For example,

History — Philosophy

and

Philosophy — History

are two different things.

He replied:

Yes. That’s a good, simple example of when [terms matter a lot]. Order does NOT matter on LT. It’s key, however, not to think of tagmash as a truly separate scheme. It’s based on regular tags. So, in this case, you have to ask yourself “why would someone tag something ‘history’ and why ‘philosophy’?

In fact, “philosophy, history” produces three mostly distinct groupings:

*History of Philosophy (A history of western philosophy by Bertrand Russell)
*Philosophy of History (What is history? by Edward Hallett Carr)
*”Old” philosophy, or philosophy that also sheds light on history (The Republic of Plato by Plato)

It’s a good example of how tagmash can perpetuate (or even increase) ambiguity, rather than driving it out. (end quote from Tim)

Just an interesting point a librarian would emphasize. :)

~Nate