Re: ARIA should require DOM mutation event support for compliance.

Joseph Scheuhammer wrote:
> Webapp scripts are written to listen for various events, and handle as 
> appropriate.  Having to also poll for changes that an external agent may 
> or may not make is not an option.

Sure.

>> Even more alternately, authors could ignore the SHOULD-level requirement. 
> Even if they do, the possibility remains that ATs might change aria-* 
> attributes, and the scripts need to handle this.

Agreed.  Just saying that this doesn't mean that a UA can't 
ARIA-compliant without implementing mutation events.

-Boris