--On Tuesday, June 17, 2025 11:22 -0700 Eric Rescorla <[email protected]>
wrote:

> On Tue, Jun 17, 2025 at 11:14 AM John C Klensin
> <[email protected]> wrote:
> 
>> 
>> 
>> --On Tuesday, June 17, 2025 10:50 -0700 Eric Rescorla
>> <[email protected]> wrote:
>> 
>> > I agree with Eliot that we now have an inconsistency with
>> > respect to Section 7.6, but I don't think the fix is to remove
>> > the (as Jay says) very carefully negotiated "historical" text,
>> > especially as part of the idea was to acknowledge historical
>> > perspectives.
>> > 
>> > Instead, I think the right fix is to revert 7.6 to the original
>> > language from RFC 9280 and add a note that acknowledges that we
>> > are relaxing this property. Perhaps "Note that historically RFCs
>> > were treated as immutable, but [THIS RFC] allows those RFCs to be
>> > reissued provided that the semantic content is preserved to the
>> > greatest extent possible".
>> 
>> I have not been able to follow the discussion as closely as I would
>> have liked. However, consider the discussions on different lists
>> lately about exactly what specific words mean (including with or
>> without case distinctions) and, while not phrased that way, whether
>> or not "exact" actually means "exact" and how much context counts.
>> For someone who is trying to depend on the content of an RFC, a
>> condition like "preserved to the greatest extent possible" -- one
>> that is inherently subjective -- is equivalent, or nearly so, to
>> "well, probably the semantic comment that you, the reader, care
>> about and how it is interpreted won't change but maybe it will".
>> And, I'm sorry, but that is ultimately equivalent to "can't trust
>> an RFC to mean what it meant when it was published".
>> 
>> I think we should be very cautious about going there or even
>> appearing to do so.
>> 
> 
> AIUI this precise change was one of the main motivations for this
> document, and
> the most of the the aforementioned text already appears in S 1.4.1:
> 
> https://www.ietf.org/archive/id/draft-editorial-rswg-rfc9280-update
> s-03.html#section-1.4.1
> 
> I'm just suggesting (following Eliot) that we make clear in S 7.6
> (which is about
> history) that the historical property was immutability but that we
> are now changing that.
> 
> For the record, I don't really agree with you on the substantive
> question here, but as this document has already passed WGLC and is
> now in front of the RSAB, I don't think it's really productive to
> debate the merits at this point.

Ok.   I didn't really say anything today that I didn't say a year or
two ago.   So just take my note as a reminder that consensus on this
subject remains fairly rough --perhaps especially so when those
without the time to follow this list closely are considered-- and
move on as appropriate.

    john

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