Re: New Version Notification for draft-leiba-rfc2119-update-00.txt
Pete Resnick <presnick@qti.qualcomm.com> Sat, 13 August 2016 00:20 UTC
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From: Pete Resnick <presnick@qti.qualcomm.com>
To: Joe Touch <touch@isi.edu>
Subject: Re: New Version Notification for draft-leiba-rfc2119-update-00.txt
Date: Fri, 12 Aug 2016 19:20:04 -0500
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In-Reply-To: <6433bb28-3e68-a18b-6bec-6017701baa03@isi.edu>
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Cc: Barry Leiba <barryleiba@computer.org>, IETF discussion list <ietf@ietf.org>
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On 12 Aug 2016, at 19:04, Joe Touch wrote: > It's inefficient to repeat the phrase "X MUST be supported by any > implementation that complies with this specification". Perfect example. That passive construction is just as bad as "X is REQUIRED". That's a compliance statement, not an interoperability statement as required by 2119. When "X" is a feature (not a protocol operation) what does "X MUST be supported" even mean? Why MUST it be supported? What interoperability problem does it cause if I choose to do otherwise? 99 times out of 100, when I've see "X is REQUIRED" or "X MUST be supported", it's a completely bogus use. > The phrase "X is REQUIRED", RECOMMENDED, or OPTIONAL corresponds to > the > incorrect English of "X is a MUST". And I would say don't use any of them. ("X is a MUST" is an abomination.) > I.e., these are reasonable adjective forms of the adverbs > MUST/MAY/SHOULD. Omitting these adjectives then requires authors to > select their own adjective forms or to have to rewrite everything as > an > adverb. Rewriting things to use an adverb is good because it requires you to have a verb. If the verbs are "support" or "comply", it's a pretty good sign that you're making the spec less clear. > IMO, if you want to drop anything, drop the MUST/MAY/SHOULD - > directives > of protocol specs should describe the spec, not the actions of the > implementer. Violent agreement on that one. pr > On 8/12/2016 4:13 PM, Pete Resnick wrote: >> >> On 11 Aug 2016, at 6:44, Stewart Bryant wrote: >> >> Optional is useful in a requirements RFC. >> >> Feature x is REQUIRED >> >> Feature y is OPTIONAL >> >> One last (and perhaps fruitless) attempt to keep this section and >> deprecate the adjectives: >> >> Using REQUIRED and OPTIONAL results in exactly the problem of using >> passive voice anywhere: REQUIRED by whom? OPTIONAL for whom? If you >> say, "A MUST do X and B MAY do Y", it is perfectly clear which actor >> is responsible (and in network protocols there are inevitably at >> least >> 2). If you say "X is REQUIRED and Y is OPTIONAL", you'll end up >> needing more text to explain the actors and their roles. >> >> Using REQUIRED and OPTIONAL is lazy. It makes specs less clear. They >> ought to be dropped. >> >> pr -- Pete Resnick <http://www.qualcomm.com/~presnick/> Qualcomm Technologies, Inc. - +1 (858)651-4478
- Re: New Version Notification for draft-leiba-rfc2… John C Klensin
- Re: New Version Notification for draft-leiba-rfc2… John R Levine
- Re: New Version Notification for draft-leiba-rfc2… Dave Crocker
- Re: New Version Notification for draft-leiba-rfc2… John Levine
- Re: New Version Notification for draft-leiba-rfc2… Randall Gellens (IETF)
- Re: New Version Notification for draft-leiba-rfc2… Joe Touch
- Re: New Version Notification for draft-leiba-rfc2… Gmail
- Re: New Version Notification for draft-leiba-rfc2… Brian E Carpenter
- Re: New Version Notification for draft-leiba-rfc2… John C Klensin
- Re: New Version Notification for draft-leiba-rfc2… Dave Crocker
- Re: New Version Notification for draft-leiba-rfc2… Pete Resnick
- Re: New Version Notification for draft-leiba-rfc2… Joe Touch
- Re: New Version Notification for draft-leiba-rfc2… Dave Crocker
- Re: New Version Notification for draft-leiba-rfc2… Pete Resnick
- Re: New Version Notification for draft-leiba-rfc2… Julian Reschke
- Re: New Version Notification for draft-leiba-rfc2… Michael Richardson
- Re: New Version Notification for draft-leiba-rfc2… Julian Reschke
- Re: New Version Notification for draft-leiba-rfc2… Ted Lemon
- Re: New Version Notification for draft-leiba-rfc2… Ben Campbell
- Re: New Version Notification for draft-leiba-rfc2… HANSEN, TONY L
- RE: New Version Notification for draft-leiba-rfc2… John C Klensin
- Re: New Version Notification for draft-leiba-rfc2… Barry Leiba
- RE: New Version Notification for draft-leiba-rfc2… Dearlove, Christopher (UK)
- Re: New Version Notification for draft-leiba-rfc2… Ted Lemon
- Re: New Version Notification for draft-leiba-rfc2… Stewart Bryant
- RE: New Version Notification for draft-leiba-rfc2… Dearlove, Christopher (UK)
- Re: New Version Notification for draft-leiba-rfc2… John C Klensin
- Re: New Version Notification for draft-leiba-rfc2… John C Klensin
- Re: New Version Notification for draft-leiba-rfc2… Dave Crocker
- Re: New Version Notification for draft-leiba-rfc2… John C Klensin
- Re: New Version Notification for draft-leiba-rfc2… Michael Richardson
- Re: New Version Notification for draft-leiba-rfc2… Barry Leiba
- Re: New Version Notification for draft-leiba-rfc2… Doug Ewell
- Re: New Version Notification for draft-leiba-rfc2… Dave Cridland
- Re: New Version Notification for draft-leiba-rfc2… Barry Leiba
- Re: New Version Notification for draft-leiba-rfc2… Time Warner Cable
- Re: New Version Notification for draft-leiba-rfc2… Michael Richardson
- Re: New Version Notification for draft-leiba-rfc2… Barry Leiba
- Re: New Version Notification for draft-leiba-rfc2… Michael Richardson
- Re: New Version Notification for draft-leiba-rfc2… Ted Lemon
- Re: New Version Notification for draft-leiba-rfc2… Ted Lemon
- Re: New Version Notification for draft-leiba-rfc2… John Leslie
- Re: New Version Notification for draft-leiba-rfc2… Ted Lemon
- Re: New Version Notification for draft-leiba-rfc2… Stewart Bryant
- Re: New Version Notification for draft-leiba-rfc2… Stewart Bryant
- Re: New Version Notification for draft-leiba-rfc2… Stewart Bryant
- Re: New Version Notification for draft-leiba-rfc2… Stewart Bryant
- Re: New Version Notification for draft-leiba-rfc2… Randy Bush
- Re: New Version Notification for draft-leiba-rfc2… Dave Crocker
- Re: New Version Notification for draft-leiba-rfc2… Michael Richardson
- Re: New Version Notification for draft-leiba-rfc2… Mark Andrews
- Re: New Version Notification for draft-leiba-rfc2… John R Levine
- Re: New Version Notification for draft-leiba-rfc2… Mark Andrews
- Re: New Version Notification for draft-leiba-rfc2… John Levine
- Re: New Version Notification for draft-leiba-rfc2… Scott O. Bradner
- Re: New Version Notification for draft-leiba-rfc2… Joe Touch
- Re: New Version Notification for draft-leiba-rfc2… Sam Hartman
- Re: New Version Notification for draft-leiba-rfc2… Dave Crocker
- Re: New Version Notification for draft-leiba-rfc2… Sam Hartman
- Re: New Version Notification for draft-leiba-rfc2… Barry Leiba
- Re: New Version Notification for draft-leiba-rfc2… Stephan Wenger
- Re: New Version Notification for draft-leiba-rfc2… Barry Leiba
- Re: New Version Notification for draft-leiba-rfc2… Ted Hardie
- Re: New Version Notification for draft-leiba-rfc2… Paul Hoffman