Re: Silver Requirements Issues

​I haven't been following Silver as well as I would like, because of WCAG​
2.1 so I'm basing my understanding of the Silver TF intention replacement
of Testable with Measurable, by hallway discussions, and reading minutes,
presentations by Silver TF members. Unfortunately, the requirements
documents doesn't specify what it means by measureability, but the absence
of "testability" in this requiremnets document is very significant.

My understanding of the current discussions around measurability is that it
could incorporate some of the ISO principles of "process" rather than
pureky testing the output. So if

   - users with disabilities are involved in testing the site or in
   developing the site then that could get a higher level of "conformance".
   - usability principles are implemented during development there could be
   a higher level of "conformance".

So measureability means there would be some metric of the development
process that would help determine the level of conformance in addition to
or in place of than just going out and testing the site without any
relationship with the developers or management or QA etc. Auditors
measuring WCAG would of course need to have access to these declarations,
and there would have to be some way of proving them to be true using
documentation etc...

So its a very different approach, a seismic shift I would say. I'm totally
into exploring it, but I don't think this requirements document should just
toss this in as a small paragraph about measureability.

This of course is my take aways from following the conversations loosely.


Cheers,
David MacDonald



*Can**Adapt* *Solutions Inc.*
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On Tue, Jul 10, 2018 at 12:49 PM, Wilco Fiers <wilco.fiers@deque.com> wrote:

> Hi David,
> I'm interested to know in how you understand the two to be different. It
> seems a fairly subtle difference, one that as a non-native speaker I could
> use help in understanding. The way I understand it, measurable means you
> can come up with a number, where as testable means you can come up with
> true or false. Seems to me like everything that's measurable should be
> testable, no?
>
> W
>
> On Tue, Jul 10, 2018 at 6:05 PM David MacDonald <david@can-adapt.com>
> wrote:
>
>> I've filled an issue regarding retiring "testability" to be replaced with
>> "measurability" in Silver
>>
>> This is a huge issue, and there is very little discussion of this in the
>> requirements document. This requirement is pulling the testability
>> foundation out from under WCAG and replacing it with measurability. It may
>> or may not be a good thing. It could work out very well or it could make
>> the guidelines unusable in a legal framework. We would need to get input
>> from lawyers who have been involved in multiple settlements and lawsuits
>> involving WCAG.
>>
>> I think it is premature to declare this shift for Silver in the
>> requirements document, but rather the requirement should say that its needs
>> to investigate testability vs measurability as a basis for the success
>> criteria (or whatever they will be called in Silver).
>>
>>
>> https://github.com/w3c/silver/issues/22
>>
>> Cheers,
>> David MacDonald
>>
>>
>>
>> *Can**Adapt* *Solutions Inc.*
>> Mobile:  613.806.9005
>>
>> LinkedIn
>> <http://www.linkedin.com/in/davidmacdonald100>
>>
>> twitter.com/davidmacd
>>
>> GitHub <https://github.com/DavidMacDonald>
>>
>> www.Can-Adapt.com <http://www.can-adapt.com/>
>>
>>
>>
>> *  Adapting the web to all users*
>> *            Including those with disabilities*
>>
>> If you are not the intended recipient, please review our privacy policy
>> <http://www.davidmacd.com/disclaimer.html>
>>
>
>
> --
> *Wilco Fiers*
> Senior Accessibility Engineer - Co-facilitator WCAG-ACT - Chair Auto-WCAG
>