On May 16, 2005, at 6:27 AM, Robert Sayre wrote:
On 5/16/05, Tim Bray <[EMAIL PROTECTED]> wrote:
The benefit the Web derived from HTML's implicit-but-universally-implemented MustIgnore rule; it introduced enough slack into the system that people could experiment without breaking things.
Don't you think the Feed Validator should flag my example as invalid?
No. I actually thought that what we meant was what the spec said, and that this was the (very reasonable) outcome of our discussion on MustUnderstand. That means that if the IETF wants to extend Atom, we can do it as long as the extensions can be safely ignored. If you want to put something new in that can't be safely ignored, the whole document namespace has to be changed. I thought that the WG had converged on a reasonable and in fact enlightened position and I really would prefer not to go back and repeat the discussion. -Tim
