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RE: Technique Designations

From: Gregg Vanderheiden <gv@trace.wisc.edu>
Date: Sun, 7 May 2006 21:44:17 -0500
To: "'WCAG'" <w3c-wai-gl@w3.org>
Message-ID: <003701c67249$4d7e26d0$ee8cfea9@NC6000BAK>

Loretta had stated it exactly correct.  

Please note that sufficient does NOT mean required.  A sufficient technique
(or combination of techniques) is deemed sufficient by the working group to
meet the success criterion.   However there may be other methods as well.
The fact that a technique is not listed does not mean it cannot be used to
meet the success criterion (unless of course it is listed specifically as
one of the "common failures" of the success criterion). 

We used to have wording explaining this better in the instructions.  I see
that it is no longer there.  Must have gotten dropped when cleaning up the
other wording.  

Please post a comment to the public list saying

PROBLEM:  instructions for How to Meet docs describe what 'sufficient' means
but do not explain that other technique could also be used (except by

Suggestion: expand description a bit to explain more clearly that
'sufficient' doesn't mean 'only'. 


 -- ------------------------------ 
Gregg C Vanderheiden Ph.D. 
Professor - Ind. Engr. & BioMed Engr.
Director - Trace R & D Center 
University of Wisconsin-Madison 
The Player for my DSS sound file is at http://tinyurl.com/dho6b 

-----Original Message-----
From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On Behalf
Of Loretta Guarino Reid
Sent: Sunday, May 07, 2006 6:34 PM
To: Lisa Seeman; Chris Ridpath; WCAG
Subject: Re: Technique Designations

Actually, your argument is exactly the reason that the numbered techniques
are sufficient, but not necessary. So I don't think there is a problem.

If you use one of the techniques, your content will meet the SC.

There is no claim that if you don't use one of the techniques, you have not
met the SC.  As you point out, people may come up with other approaches that
still solve the problem. And baselines that contain different sets of
technologies will present different sets of techniques to draw from.


On 5/7/06 5:16 PM, "Lisa Seeman" <lisa@ubaccess.com> wrote:

>> 1) Sufficient - Are the numbered techniques in the "techniques for 
>> addressing" section of each SC. If followed your content will meet 
>> SC. You may have to use more than one "sufficient" tech to meet SC. 
>> If not followed then you've got to use another technique (outside the 
>> listed techniques and not one of the "common failures") to meet SC.
> This looks problematic to me. If some has solved the problem, but has 
> not done it in a way we thought of this would suggest that they are 
> not good enough (even if it works, right now, with assistive 
> technology). That is blocking the evolution of accessibility and the 
> use of  new and better techniques.
> Further we have only created techniques in "critical " technologies - 
> so if a form is made accessible using XForms, or a graphic uses SVG 
> with great grouping and descriptions then according to this they have 
> failed. Which is a bit crazy ...
Received on Monday, 8 May 2006 02:44:24 UTC

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