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Re: [httpRange-14] What do HTTP URIs Identify?

From: Tim Berners-Lee <timbl@w3.org>
Date: Mon, 5 Aug 2002 09:21:38 -0400
Cc: www-tag@w3.org
To: Mark Baker <distobj@acm.org>
Message-Id: <4610C556-A876-11D6-958A-000393914268@w3.org>


On Wednesday, July 31, 2002, at 09:04 PM, Mark Baker wrote:

>
> I'm just tossing this summary "out there" in case it can be of use ...
>
> As I see it, we've got two models in front of us.  TimBL's appears to me
> to be self-consistent, as does Roy's.  But TimBL doesn't believe that
> Roy's is, due to TimBL's perceived inability for HTTP to distinguish
> between the resource identified by the URI, and a representation of it.
> Given that, I can fully understand his push back on this issue.
>
> But Roy says that there is no inconsistency in his model, because HTTP
> 1.1 was fixed in 1995 to handle this (Content-Location?).
>
> So as a first step, TimBL should verify that the fix that Roy refers to
> does in fact make Roy's model self-consistent.  This is why I've asked
> Roy for the details.
>

You misunderstand what I mean by document.  I am NOT
talking about a representation.
When a picture fo a car is available
in JPEG and PNG, there is a great value to being identify the
picture.  It is the picture which is the timbl:Document ,
either representation (PNG or JPEG). It is not the car.

(It is what folks on the street in a lot of cases think of
as a "web page")

If you go with Roy's idea that the URI identifies the car,
then you have no URI left for the document.

> If we get that far, then I think the rest of the issue should
> practically resolve itself (hah!), as we can weigh the pros and cons of
> each.
>
> Thanks.
>
> MB
> --
> Mark Baker, CTO, Idokorro Mobile (formerly Planetfred)
> Ottawa, Ontario, CANADA.               distobj@acm.org
> http://www.markbaker.ca        http://www.idokorro.com
Received on Monday, 5 August 2002 09:21:35 GMT

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