- From: Greg Lowney <gcl-0039@access-research.org>
- Date: Thu, 02 May 2013 10:03:21 -0800
- To: User Agent Working Group <w3c-wai-ua@w3.org>
- Message-ID: <5182AA69.4050006@access-research.org>
Jeanne's proposal was well written, and I can support it...as long as we won't be challenged on it. However, if companies might challenge the standard or their evaluation based on it, then it would need to be more rigorous, because it is--intentionally--not written in a rigorous, legalistic way. In particular (and you can bother reading these only if it's an issue): (a) it is quite simplified from the longer list of factors we use in practice. (For example, my list has six: importance, inconvenience for other groups, possibility today, objective measurability, difficulty to implement, and likelihood of compliance.) (b) the level descriptions allow some SC to not fit into any of the three categories. That's because each description one clause about impact and a second about difficulty, connected by "and", with Level A being high impact AND low difficulty, Level AA being medium impact and medium difficulty, and Level AAA is low impact and high difficulty. However, by that logic no level fits something with medium impact and high difficulty, or low impact and low difficulty. The easiest way to fix that would be to clarify that AA requires means *at least* medium impact, and AAA require *at least* low impact. (c) because the wording of the three levels aren't really parallel, it looks like it's introducing more requirements than it means to. For example, only the description of Level A refers to "different groups", which implies that nothing that only affected one type of disability could ever rate Level A, no matter how severe its impact, and I don't think that's true. And a minor editorial point, in Level AA the word "requires" should be singular to match "solutions". -------- Original Message -------- Subject: Re: Proposal for definition of levels From: Simon Harper <simon.harper@manchester.ac.uk> To: Jim Allan <jimallan@tsbvi.edu> Cc: User Agent Working Group <w3c-wai-ua@w3.org> Date: 4/29/2013 10:38 PM > +1 > > > On 29/04/13 23:02, Jim Allan wrote: >> Anybody else have thoughts? >> can we do this on the list and not on the call? >> >> Jim >> >> >> On Fri, Apr 26, 2013 at 9:32 AM, Richards, Jan <jrichards@ocadu.ca >> <mailto:jrichards@ocadu.ca>> wrote: >> >> +1 >> >> >> >> -Jan >> >> >> >> *From:*Jim Allan [mailto:jimallan@tsbvi.edu >> <mailto:jimallan@tsbvi.edu>] >> *Sent:* April-25-13 5:55 PM >> *To:* Jeanne Spellman >> *Cc:* User Agent Working Group >> *Subject:* Re: Proposal for definition of levels >> >> >> >> This is really nice, clear, and concise. It explains our rationale >> for the levels without getting incredibly specific. >> >> Jim >> >> >> >> On Thu, Apr 25, 2013 at 10:54 AM, Jeanne Spellman <jeanne@w3.org >> <mailto:jeanne@w3.org>> wrote: >> >> Here is my first pass at writing a definition of levels proposal. >> This material would go in the introduction. It would not be >> normative material, and should be easy to read. >> >> Proposed: >> >> UAAG conformance levels (A, AA, AAA) provide a path for user agent >> developers to improve their product over time and to prioritize >> new features to develop. UAAG conformance levels attempt to >> balance the needs of people with disabilities with the difficulty >> the user agent developer could experience in meeting that need. >> There are many different types of disabilities and different types >> of user agents, so the UAAG level assigned to a success criterion >> may not precisely match the definition of the level in all >> circumstances. >> >> Level A success criteria represent needs where different groups of >> people with disabilities are blocked from receiving information or >> accomplishing a task AND that the solutions to those needs are >> relatively minor for developers to solve or the solutions are >> common in the marketplace. In some cases, extensions or addons to >> popular browsers provide solutions. >> >> Level AA represents needs where people with disabilities have >> difficulty accessing information or accomplishing a task >> (including tasks causing excessive fatigue), and where the >> solutions may be more difficult to implement or requires >> developing a new subsystem for the product. >> >> Level AAA represents needs where the solution improves >> accessibility for some information or task, but the solution is >> challenging to solve, requiring a major effort or development of >> intelligent algorithms. >> >> >> >> >> -- >> Jim Allan, Accessibility Coordinator & Webmaster >> Texas School for the Blind and Visually Impaired >> 1100 W. 45th St., Austin, Texas 78756 >> voice 512.206.9315 <tel:512.206.9315> fax: 512.206.9264 >> <tel:512.206.9264> http://www.tsbvi.edu/ <http://www.tsbvi.edu/> >> "We shape our tools and thereafter our tools shape us." McLuhan, 1964 >> >> >> >> >> -- >> Jim Allan, Accessibility Coordinator & Webmaster >> Texas School for the Blind and Visually Impaired >> 1100 W. 45th St., Austin, Texas 78756 >> voice 512.206.9315 fax: 512.206.9264 http://www.tsbvi.edu/ >> "We shape our tools and thereafter our tools shape us." McLuhan, 1964
Received on Thursday, 2 May 2013 17:03:37 UTC