- From: Henry S. Thompson <ht@inf.ed.ac.uk>
- Date: Mon, 15 Sep 2008 19:38:03 +0100
- To: John Bradley <john.bradley@wingaa.com>
- Cc: "Williams, Stuart (HP Labs, Bristol)" <skw@hp.com>, Mark Baker <distobj@acm.org>, "www-tag@w3.org" <www-tag@w3.org>
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I've been re-reading this tangled thread, and want to pull out one tiny bit to test my understanding: John Bradley wrote: > If =skw is assigned to you along with =!BF81.FD97.C81B.B4E5 and at > some point you stop paying for =skw and TBL wants to purchase it he > can get =skw but not =!BF81.FD97.C81B.B4E5, a new CID would be > created if he needed it. Would I be correct in saying that it's because you feel obliged to acknowledge that the injunction "Cool URIs don't change" is unrealistic, indeed that it you allow naming authorities to recycle names under their control, e.g. after non-payment of annual rental fees, that the corresponding URIs _will_ change, that you then need to make a distinction between what you call persistent vs. non-persistent URIs? That is, a ! is the way a naming authority indicates that it will _not_ recycle a name. Would I furthermore be correct in concluding that it follows that if a naming authority leases a _persistent_ name to someone, and they stop paying, that all the naming authority is committed to doing is retiring the name and never re-issuing it? It continues to identify what it always did, in principle at least, although in practice it may not (will definitely not?) be possible to retrieve either metadata or representations using it. And that the guarantee that a persistent name always identifies the same resource depends on the good behaviour of the leasee of that name? And finally, that persistence does _not_ imply continuity of ownership? That is, I may lease a persistent name from some naming authority, and then sell that name on to someone else. It's then up to _their_ good behaviour to continue to use that name to identify the same resource. Thanks, ht - -- Henry S. Thompson, School of Informatics, University of Edinburgh Half-time member of W3C Team 10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440 Fax: (44) 131 651-1426, e-mail: ht@inf.ed.ac.uk URL: http://www.ltg.ed.ac.uk/~ht/ [mail really from me _always_ has this .sig -- mail without it is forged spam] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQFIzquLkjnJixAXWBoRAqdIAJ98y0Fb4etcXClieDe7SbT5pw9mbgCgg85p J6xjGBNd8SXHdi+PcoFd/BU= =b99e -----END PGP SIGNATURE-----
Received on Monday, 15 September 2008 18:38:51 UTC