- From: Benja Fallenstein <b.fallenstein@gmx.de>
- Date: Mon, 28 Jul 2003 21:51:43 +0200
- To: Jon Hanna <jon@spin.ie>
- CC: www-rdf-interest@w3.org
Jon Hanna wrote: > Who do you know? Who do you trust? Who said what? > > uri1Owner says uri1 is the same as w3.org. Do I trust uri1Owner? > Even if I do, do I trust what uri1Owner has to say about w3.org (I may > consider him honest but misinformed). If uri1Owner owns uri1, is trust really required for a statement from uri1Owner about *what uri1 denotes*? I think that this is for uri1Owner to *specify*, don't you agree? What does http://example.org/foo/bar/baz (or #baz) denote? I think the denotation is what the owner of the URI *says* it is-- whether you trust them or not. So, if uri1Owner *says* that uri1 owl:sameAs uri2, then uri1 is *defined* (IMHO) to denote the same as uri2. uri1Owner *cannot* be wrong about this. (Of course, when uri1Owner goes on and says, uri1 rdf:type foo:Lamp, then *this* assertion may be wrong.) > Let's say dereferencing uri1 gives us the document: > > <html>W3.org is full of rubbish</html> > > It isn't valid HTML, but then is the author of the above going to care about > valid HTML :) > > Well, say I don't agree with uri1Owner. I can put something on the web > (semantic or otherwise) that says so: Sure. You can disagree with uri1Owner's opinion about W3C. But is it useful to disagree with uri1Owner about the denotation of uri1? > For security reasons software dealing with this stuff should generally > assume that most people are malicious and the rest are idiots as far as > possible. To accept the identification of uri1 and http://www.w3.org/ I'm > going to want either to be told this by somebody I trust, or at the very > least be told this by both uri1Owner and the W3C (I would take the W3Cs word > for it that what I can retrieve from uri1 is a valid representation of > http://www.w3.org/, but not the inverse). Hm. So you are saying that there are 'invalid representations' of a resource? I.e., it can be that - uri1 denotes X - Through HTTP, uri1 resolves to R - R is not a representation of X This is interesting, but I'm not sure whether it flies. Doesn't this mean that a browser shouldn't show you R when you enter uri1 only when it is sure that R is a representation of X? Do you need to trust example.org in order to be able to view http://example.org/blah in your browser, then? - Benja
Received on Monday, 28 July 2003 15:53:27 UTC