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RE: httpRange-14

From: <Patrick.Stickler@nokia.com>
Date: Tue, 5 Aug 2003 14:51:04 +0300
Message-ID: <A03E60B17132A84F9B4BB5EEDE57957B5FBC2E@trebe006.europe.nokia.com>
To: <chris@w3.org>, <distobj@acm.org>
Cc: <www-tag@w3.org>


	-----Original Message----- 
	From: ext Chris Lilley [mailto:chris@w3.org] 
	Sent: Mon 2003-08-04 16:51 
	To: Mark Baker 
	Cc: www-tag@w3.org 
	Subject: Re: httpRange-14
	An interesting result of Roy's argument is that resources, since they
	cannot be observed directly, can only be inferred through observation
	of the representations that they have returned over time.
	I think that is a valuable observation and leads further to a
	principle that I find clarifying, though it may upset some: resources
	are inherently second class objects. URIs are first class objects, and
	may be stored, transferred, compared for equality and so forth. So can
	resource representations (and proxy caches do this all the time).
	Resources, though, are a derived abstraction. You can't observe them
	directly, or measure them, or compare them. You can compare their
	identifiers, but not the resources themselves. Their meaning, the
	abstraction that they convey, is reverse engineered from observation
	or from shared social discourse. The meaning is not observable from
	the identifier in isolation, only from the usage of this identifier.
	Naturally, social usage of an identifier is influenced by the
	representations returned from it.
	Consistency, then, is a social effect where observations on the usage
	of the identifier and observations on the returned resources are
	substantially in agreement. Consistency is an analogue quantity, not a
	binary one - consistency can be greater or lesser, can be argued
	about, has shades of meaning, and whether the consistency is good
	enough depends on the use that will be made of it.

Very well put. And SW descriptions of those resources, using RDF, OWL, etc. can aid in the general understanding of what those resources are and can be part of a more precise social interaction regarding those resources.



Received on Tuesday, 5 August 2003 07:52:33 UTC

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