- From: Pat Hayes <phayes@ihmc.us>
- Date: Sat, 2 Jun 2007 14:06:56 -0700
- To: John Cowan <cowan@ccil.org>
- Cc: Dan Brickley <danbri@danbri.org>, www-tag@w3.org
>Pat Hayes scripsit: > >> Those are all physical. But now suppose what you are looking at is an >> image of a marble bust of Julius Caesar. There is no physical >> connection between you and the marble, or between you and Julius. > >I don't see why not. There is an electromagnetic interaction, unmediated >by hardware, between you and the marble, which manifests as a >visual perception of it. Between me an the image, maybe, but not between me and the marble. And in any case, it is one-way. It does not give me 'access' to the marble, or to Julius. > >> Good question. But I don't really see how the Internet community can >> possibly do this. First, there really isn't such a community in any >> real sense. Second, how can any community establish conventions for >> naming everything that needs to be named? Human societies have not >> established such conventions. > >What are these things which need to be named which have no names? >The fact that something is named is evidence that it needed to be >named. I was speaking not of names, but of *conventions* for creating names. And of course I spoke too quickly as there are many such conventions: we all know that 'Roger' and 'Miguel' are both male names, the former English and the latter Spanish. But there is no *universal* convention for all names. > >> BUt how else is one going to use the name to "access" the resource, >> than for there to be some kind of causal connection between them? How >> would I access Italy? > >You cannot access resources themselves. That is not what the TAG architecture document says. It refers explicitly to accessing a resource, the result of which is that a representation is delivered in response to the access. > You can only access particular >representations of those resources, chosen by content negotiation Negotiation between what? In the case of Italy, does Italy take part in the content negotiation? How? >(perhaps trivial negotiation of the form "server proposes just one >representation, client accepts willy-nilly"). Italy is not a server. > >The connection between an information resource and its representation(s) >is fairly close and straightforward. The representation you get of >Italy when you do a GET on an URL for Italy will have a rather more >abstract connection to Italy. I simply do not accept that the two uses of 'representation' have anything in common in these two cases. I challenge anyone who claims otherwise to provide an account of what "representation" means which will embrace both usages. For the record, I note that the TAG (and the REST documentation) usage of 'representation' is entirely different from the use of 'representation' throughout AI/KR work. Pat Hayes > >-- >John Cowan cowan@ccil.org http://ccil.org/~cowan >The known is finite, the unknown infinite; intellectually we stand >on an islet in the midst of an illimitable ocean of inexplicability. >Our business in every generation is to reclaim a little more land, >to add something to the extent and the solidity of our possessions. > --Thomas Henry Huxley -- --------------------------------------------------------------------- IHMC (850)434 8903 or (650)494 3973 home 40 South Alcaniz St. (850)202 4416 office Pensacola (850)202 4440 fax FL 32502 (850)291 0667 cell phayesAT-SIGNihmc.us http://www.ihmc.us/users/phayes
Received on Saturday, 2 June 2007 21:07:10 UTC