- From: Shawn Lauriat <lauriat@google.com>
- Date: Fri, 1 Feb 2019 15:52:41 -0500
- To: Silver TF <public-silver@w3.org>
- Message-ID: <CAGQw2hnnOP0jsTredr7qPNzNaf5KXVRrpTzaf3AkEvNQzWXq3g@mail.gmail.com>
Continuing the trending evidence that I do horribly with minutes when
running a call, I've added a quick recap of the conversation and our main
talking points, as we had a really great talk through some hard areas today
(please correct me and fill in important points that I missed!):
- Requirements: We ran through several of the opportunities noted
in our Silver
Requirements draft <https://w3c.github.io/silver/requirements/index.html>,
and it seems that the Usability opportunities
<https://w3c.github.io/silver/requirements/index.html#oppotunities_usability>
have general consensus from all, though the implementation details, likely
less so. We don't need that for Requirements consensus, though, I/we don't
think.
- Once we got to Conformance Model opportunities
<https://w3c.github.io/silver/requirements/index.html#oppotunities_conformance>,
we clearly have aspects that we need to clarify and work through, as we
didn't get past Measurable Guidance. This has a few aspects of it to work
out, though:
- Clarify that rather than replacing pass/fail statements, (new draft
of the last bit): "Multiple means of measurement, in addition to
pass/fail
statements, allow inclusion of more accessibility guidance."
- We had a solid conversation around WCAG 2.0 AA mapping to bronze.
Attempting to recap:
- WCAG 2.0 AA should map to bronze, so that we can have bronze
contain the pass/fail requirements and then silver and gold can
include the
more subjective requirements. This supports the legal requirement for
talking about requirements in court.
- Courts don't judge pass/fail statements, they handle the unclear
cases where it takes judgement on evidence to make a call as
to the outcome.
- Things don't go to court because they fail a particular test,
they generally do so because someone can't use or access something.
- WCAG 2.0/1 AA includes many subjective requirements, such as Non-text
Content <https://www.w3.org/TR/WCAG21/#non-text-content>: "All
non-text content that is presented to the user has a text
alternative *that
serves the equivalent purpose*…" [emphasis mine]. Should we move the
subjective aspects from bronze to silver, which would move WCAG AA
equivalence to silver? (no)
- We talked through an example framework of how to test conformance
with Non-text Content, which guides the tester through interpreting the
content-author's intention for the use of an image to judge whether the
text alternative serves something resembling equivalent purpose.
- We can use similar measurability to other guidance, using
frameworks that guide the tester (meaning person doing the activity of
testing, rather than a person with that job title) through the process of
determining how well or not a given thing conforms with guidance, with a
line in the sand as to what means failure, without the guidance
existing as
strict pass/fail statements. This can enable us to include
guidance serving
people with disabilities whose needs WCAG can't currently include due to
the need to express guidance in strict pass/fail statements.
- This doesn't introduce any more subjectivity into accessibility
guidelines and conformance than we have today, but tries to
give a means to
express the subjectivity and potential wishy-washiness of
outcomes, for
instance where an image has lousy (but not absurdly wrong)
alt text or a
video has captions with loads of errors in them.
- Bringing the conversation back to the opportunity we describe in
the Silver Requirements draft (including the suggested edit to the last
sentence), how can we express this in a way that the overall
Working Group
will agree that Silver should include this as a desired aspect of Silver:
"*Measurable Guidance*: Certain accessibility guidance is quite clear
and measurable. Others, far less so. There are needs of people with
disabilities, especially cognitive and low vision disabilities
that are not
well served by guidance that can only be measured by pass/fail statement.
Multiple means of measurement allow inclusion of more accessibility
guidance."
Again, please correct me and fill in important points that I missed! I
wrote that up from memory, a questionable idea to anyone who knows my
memory.
-Shawn
Formatted minutes <https://www.w3.org/2019/02/01-silver-minutes.html>
Plain text of minutes:
[1]W3C
[1] http://www.w3.org/
- DRAFT -
Silver Community Group Teleconference
01 Feb 2019
Attendees
Present
johnkirkwood, Charles, LuisG, JF, KimD, jeanne,
kirkwood, Cyborg, mikeCrabb, Shawn, Lauriat,
AngelaAccessForAll, Makoto, JanMcSorley, Jennison
Regrets
Chair
SV_MEETING_CHAIR
Scribe
johnkirkwood
Contents
* [2]Topics
1. [3]Refining the Requirements document
* [4]Summary of Action Items
* [5]Summary of Resolutions
__________________________________________________________
Refining the Requirements document
<Lauriat> Requirements draft:
[6]https://w3c.github.io/silver/requirements/index.html
[6] https://w3c.github.io/silver/requirements/index.html
<Lauriat> Opportunity for clarification: Measurable Guidance:
Certain accessibility guidance is quite clear and measurable.
Others, far less so. There are needs of people with
disabilities, especially cognitive and low vision disabilities
that are not well served by guidance that can only be measured
by pass/fail statement. Multiple means of measurement allow
inclusion of more accessibility guidance.
<Lauriat> Drafted rewrite of the last sentence: Multiple means
of measurement, in addition to pass/fail statements, allow
inclusion of more accessibility guidance.
<Lauriat> JF: Achieving bronze could require meeting all of
those pass/fail statements, essentially mapping to pass/fail.
equivalent experience must be between the visual and non visual
user in that case. Must get the same information.
+1 to shawn
+1 to KD
Thats why we have a jury of peers
these are very good points! intention. structure that JF went
through could be very powerful
not easily automated in a scalable testable manner?
what if bronze vs silver vs gold is more about the extent/level
of testing?
this seems to be about the burden of testing
<Lauriat> trackbot, end meeting
Summary of Action Items
Summary of Resolutions
[End of minutes]
Received on Friday, 1 February 2019 20:53:19 UTC