rel=CURIE in RDFa, but rel=URI in Link:

Not sure who to tell about this now, but it does seem to bear on our  
discussion of CURIE/URI confusion.

Quoth http://www.w3.org/TR/rdfa-syntax/#relValues :

@rel a whitespace separated list of CURIEs, used for expressing  
relationships between two resources ('predicates' in RDF terminology);

Quoth http://tools.ietf.org/id/draft-nottingham-http-link- 
header-02.txt :
Link = "Link" ":" #("<" URI-Reference ">" *( ";" link-param ) )
link-param = ( ( "rel" "=" relationship ) | ...
relationship = URI-Reference | ...
I was under the impression that the founding fathers meant for Link:  
and <link> to be compatible. We seem to have lost that possibility  
now, due to lack of coordination between groups working independently  
on extensions to HTTP and XHTML.
Jonathan