Karl,
There are good simple reasons that after more than ten years,
developers following W3C specifications have not produced authoring
tools appropriate to the general user.
It is that the users are not included in the W3C process, the
teaching travels both ways, as any teacher will confirm**. The
results is that the specifications aren't understood or 'tested' by
many people and have basic technical problems.
examples include such facts as:
current SVG specifications do not define how to or what partial SVG
can be copy and pasted.
this makes authoring extremely and unnecessarily difficult for non-
technical audiences.
Who may be used to being able to copy and paste images.
CSS can enable, but not disable audio: http://www.peepo.co.uk
Jonathan Chetwynd
I've long held the view that Turing test fails in the respect that it
does not take account of the abilities of the listener, it assumes
there is a standard intelligent human response. A human answer to why
the sky is blue is context sensitive. Romance, age location will all
effect the response. Significantly not only teachers, but parents and
carers develop communication skills suited to the recipient...this
can in the extreme case consist of "ga-ga".
not many adults make 'intelligent' and good teachers, and not all
listeners will agree on which response is intelligent.