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dom at happygiraffe.net
Thu Feb 9 15:58:51 GMT 2006
On Thu, Feb 09, 2006 at 12:04:02PM +0000, Andy Wardley wrote:
> Dominic Mitchell wrote:
> > Then you've got a broken web site -- period. Content should have only
> > one, canonical URL.
> Not so. Remember that a URL is a Universal Resource Locator. It simply
> says that there is a resource that can be fetched from this location. It
> doesn't say that this is the only location for the resource, or that the
> resource will be there tomorrow or the day after.
> For example, both these URLs point to the same resource:
> Both are correct, both are equally valid.
> Homotopic paths (different paths that get you to the same place) are
> a fundamental part of any hyperspace such as the web, and a good thing too.
> There is no strict hierarchy, there is no "One True Location". That's
> why it's a web and not an index.
> On the other hand, every resource should ideally have one, canonical URI.
> A Universal Resource Identifier does not say anything about the location
> of the resource, but simply gives it an identifier so that it can be
> uniquely referenced now and for the rest of time. You may not be able
> to fetch the resource, now or ever, but at least you'll be able to talk
> about it.
> I suspect this is what you're really getting at. The URL/URI confusion
> is a common one, made all the more perplexing by the fact that URLs are
> written using the URI "syntax". Thus in common parlance, URL and URI are
> interchangeable but actually relate to slightly different concepts.
Spot on. Guess I've been listening to too many semantic web people
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