Re: [Slim] Alvaro Retana's No Objection on draft-ietf-slim-negotiating-human-language-19: (with COMMENT)

Randall Gellens <rg+ietf@randy.pensive.org> Sun, 07 January 2018 03:27 UTC

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Date: Sat, 6 Jan 2018 19:27:11 -0800
To: Alvaro Retana <aretana.ietf@gmail.com>, "The IESG" <iesg@ietf.org>
From: Randall Gellens <rg+ietf@randy.pensive.org>
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Subject: Re: [Slim] Alvaro Retana's No Objection on draft-ietf-slim-negotiating-human-language-19: (with COMMENT)
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At 6:13 AM -0800 1/6/18, Alvaro Retana wrote:

>
>  Thanks for writing an interesting document!
>
>  Given that this document doesn't mandate the behavior in the case 
> of not having
>  languages in common, why does it matter if the combination is "difficult to
>  match together" or not?

The goal is to have an interactive session with the greatest chance 
of mutual communication.


>    I'm wondering about this piece of text (from 5.2):
>
>     ...The
>     two SHOULD NOT be set to languages which are difficult to match
>     together (e.g., specifying a desire to send audio in Hungarian and
>     receive audio in Portuguese will make it difficult to successfully
>     complete the call).
>
>  I don't understand how "difficult to match" can be enforced from a normative
>  point of view.  Difficulty seems to be a subjective criteria -- the example
>  shows a pair that I would consider difficult too (I don't speak Hungarian!),
>  but other pairings could still be difficult for me but easy for 
> others.  Using
>  "SHOULD NOT" (instead of "MUST NOT") implies that there are cases in which it
>  is ok to do it (again, probably subjectively).  It seems to me that 
> the "SHOULD
>  NOT" could be a simple "should not".

Please see my reply to Bernard and Paul; I will reword the text to be 
descriptive rather than normative.

>
>  BTW, that reminds me: please use the template text from rfc8174 (instead of
>  rfc2119).

Thanks for catching this.

>
>  Nit:  It would be nice to expand SPD in the abstract and put a reference to
>  rfc4566 in the Introduction.

You mean SDP?  OK.


-- 
Randall Gellens
Opinions are personal;    facts are suspect;    I speak for myself only
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