To: email@example.com In-Reply-To: firstname.lastname@example.org's message of Wed, 16 Aug 1995 13:56:16 -0700 <95Aug16.email@example.com> Subject: Re: URN namespace From: Larry Masinter <firstname.lastname@example.org> Message-Id: <95Aug16.email@example.com> Date: Wed, 16 Aug 1995 15:45:25 PDT Any naming system that uses current DNS domains and expects long term persistence also requires at least a low-frequency time stamp, because current DNS domains are not guaranteed long term persistence. I think 'year' is good enough, but 'year and month' might be better. 1993 xerox.com documentID Note punctuation elided. If year=currentyear, use DNS, otherwise use some other service. > Does ease (or difficulty) of creating and extending the name space > affect persistence? If it is easy to create a naming authority, will . this work against persistence? I think the key element isn't 'ease of creating' but 'frequency of reassignment'. We should all have heard of the cases of 'mtv.com' and 'kaplan.com' and 'bbb.com' already, right?