Ian Hickson wrote:
On Sat, 17 Jan 2009, Sam Ruby wrote:
Shelley Powers wrote:
So, why accept that we have to use MathML in order to solve the
problems of formatting mathematical formula? Why not start from
scratch, and devise a new approach?
Ian explored (and answered) that here:
http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2008-April/014372.html
Key to Ian's decision was the importance of DOM integration for this
vocabulary. If DOM integration is essential for RDFa, then perhaps the
same principles apply. If not, perhaps some other principles may apply.
Sam's point here bears repeating, because there seems to be an impression
that we took on SVG and MathML without any consideration, while RDF is
getting an unfair reception.
On the contrary, SVG and MathML got the same reception. For MathML, for
instance, a number of options were very seriously considered, most notably
LaTeX. For SVG, we considered a variety of options including VML.
I would encourage people to read the e-mail Sam cited:
http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2008-April/014372.html
It's long, but the start of it is a summary of what was considered and
shows that the same process derived from use cases was used for SVG and
MathML as is being used on this thread here.
I'm not doubting the effort that went into getting MathML and SVG
accepted. I've followed the effort associated with SVG since the beginning.
I'm not sure if the same procedure was also applied to the canvas
object, as well as the SQL query capability. Will assume so.
The point I'm making is that you set a precedent, and a good one I
think: giving precedence to "not invented here". In other words, to not
re-invent new ways of doing something, but to look for established
processes, models, et al already in place, implemented, vetted, etc,
that solve specific problems. Now that you have accepted a use case,
Martin's, and we've established that RDFa solves the problem associated
with the use case, the issue then becomes is there another data model
already as vetted, documented, implemented that would better solve the
problem.
I propose that RDFa is the best solution to the use case Martin
supplied, and we've shown how it is not a disruptive solution to HTML5.
The fact that it is based on RDF, a mature, well documented, widely used
model with many different implementations is a perk.
Shelley
