RE: Modularity (was: Linkbases,Topic Maps,and RDF Knowledge Bases --help me understand, please)

[Gavin Thomas Nicol <gtn@ebt.com>]

> The official line is that resources are identical
> iff their URIs are identical, although I take a
> more relaxed view: two URIs may refer to the same
> resource if the owner says so.  

Even URI matching is not a true substitute for identity
matching of course... though it is *one* view that works
within one world.

> But I was addressing a different point: namely, the undecidability
> of whether two syntactically different XPointers point to the
> same part of a given document without examining the document.
> For XLink purposes, they are the same if they refer to the
> same thing in document; for RDF purposes, they are the
> always different.

Different strokes for different folks.