- From: Gregg Vanderheiden <gv@trace.wisc.edu>
- Date: Mon, 7 Nov 2005 09:51:08 -0600
- To: "'Yvette Hoitink'" <y.p.hoitink@heritas.nl>, <w3c-wai-gl@w3.org>
I think this is good approach. However note that we do not specify anything as necessary - just as sufficient. So necessary but not sufficient is not possible in the Guide Doc (which cannot specify new requirements). However, if validity is required to programmatically determine something then it would already be covered. Several people have made this point - and it seems to indicate that validity testing would be a very good tool to use in achieving the goal of 'programmatically determined'. Gregg -- ------------------------------ Gregg C Vanderheiden Ph.D. Professor - Ind. Engr. & BioMed Engr. Director - Trace R & D Center University of Wisconsin-Madison -----Original Message----- From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On Behalf Of Yvette Hoitink Sent: Monday, November 07, 2005 9:43 AM To: w3c-wai-gl@w3.org Subject: Validity as a technique Hello everyone, I'm trying to find some middle ground on the topic of the requirement for validity in WCAG. One of the many arguments for requiring validity at level 1 had to do with the fact that otherwise, some of our other requirements wouldn't be met because you can't programmatically determine things if there are syntax errors. That made me think: isn't validity a necessary but not sufficient technique for some of our guidelines? I propose to delete the requirement for validity from our guideines and instead list it as a necessary but not sufficient technique for all the success criteria that require something can be 'programmatically determined'. I think this would solve many of the problems: * We do not require it in the normative section (the guidelines), which prevents legal actions against websites that are accessible but do not validate because they used an attribute that isn't defined in the specs. * We limit our guidelines to things that clearly cause accessibility problems when violated, which makes the document more believable. Since validity falls into the category of 'how to do this' this is put in the techniques. * We stimulate using other W3C standards and emphasize the importance of validity without using WCAG as a platform for other agendas such as the promotion of valid code. Any thoughts? Yvette Hoitink Heritas, Enschede, the Netherlands E-mail: y.p.hoitink@heritas.nl WWW: http://www.heritas.nl
Received on Monday, 7 November 2005 15:51:21 UTC