On Wed, Apr 1, 2009 at 8:37 AM, Mike Taylor <[log in to unmask]> wrote: > Worse, consider how the actionable-identifier approach would translate > to other non-actionable identifiers like ISBNs. If I offer the > non-actionable identifier > info:isbn/0253333490 > which identified Farlow and Brett-Surman's edited volume "The Complete > Dinosaur", it's obvious that you have a choice of methods for > resolving the ISBN ... but the identifier gives no indication of what those choices might be, and I wouldn't even be able to find out anything more about the info:isbn scheme unless I happened to know that http://info-uri.info/ is the registry for info: URIs (or could Google my way to it). An http: identifier could at least take you to general information about the scheme (perhaps with options for resolution), if not directly to some description of the identified thing itself. Keith