RDF and http: URIs
I just had a look at the RDFa Primer 1.0 working draft.
I generally appreciate this plan for embedding RDF data in XHTML. But I still have a problem with RDF's use of http URIs to identify non-digital resources.
<p class="contactinfo" about="http://example.org/staff/jo">
to indicate that this is contact information for the person described at
http://example.org/staff/jo retrieves a digital web page,
not a living person. Thus, the URI
identifies that web page. Not the person.
http://example.org/staff/jo to identify the person, is at best ambiguous.
(Common sense may tell us that the contact information is for the person, but all this
is about interpreting data without common sense.)
We are in bad need of some way to specify if
http://example.org/staff/jo is to identify the retrieved resource,
or if it should be further de-referenced to identify the subject of that resource,
in this case Jo Smith.