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Subject: Resolutions
Having now caught up on the W3C TAG list discussions: You know this, but I'll restate the obvious. After reading the emails, particularly http://lists.w3.org/Archives/Public/www-tag/2008Oct/0104.html and follow up: People will keep assuming that because http://xri.net/=drummond can resolve to an XRDS, http://xri.net/=drummond is an identifier for an XRDS. Jonathan Rees clearly thought so. Do not allow this. And do not distinguish between http://xri.net/=drummond and http://xri.net/=drummond/?_xrd_r=application/xrds+xml , or http://*.xri.net/=drummond and http://thing-described-by.org/xri/=drummond . =drummond, and http://xri.net/=drummond, both identify Drummond the Abstract Thing (the human being, in fact; Abstract really means Not Necessarily Digital). http://xri.net/... is also a service that gets back a description of Drummond. http://xri.net/=drummond/?_xrd_r=application/xrds+xml is a more refined service call, to get a particular kind of description. But Neither Service Call Identifies Drummond. If we say they do, we're back at the mess we started with. That's the inherent problem in using an identifier, URI, which is intrinsically also a service call. All we can do with this is, always return 303s in XRI resolution calls ("what you are getting Is Not Drummond. It's a description of Drummond"). That doesn't change whether we specify XRDS as a parameter or not. And maybe, push the XRDS-Location header more in examples (if not implementations). Because that XRDS-Location URL *is* the identifier for the descriptor. Pointing to the equivalence of, say, HTTP HEAD http://thing-described-by.org/info:xri:=drummond and HTTP HEAD http://xri.net/=drummond might not be such a bad thing rhetorically: it makes more clear the distinction between resolution and identification, and that the XRI resolution binding is not a retrieval of a resource named in the URL --- just as thing-described- by.org is clearly not. Again, I know you know this, but it'll be a lot of work to make sure URL-heads get it too. ^ ^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dr Nick Nicholas; Link Affiliates, opoudjis@optushome.com.au Melbourne skype:opoudjis http://www.opoudjis.net "Despite millions of dollars of research, death continues to be this nation's number one killer." --- Henry Gibson, Kentucky Fried Movie. __________________________________________________________________________
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