"We believe the needs of MathML can be sufficiently met by libraries like MathJax and doesn't need to be more directly supported by the platform. In areas where

"We believe the needs of MathML can be sufficiently met by libraries like MathJax and doesn't need to be more directly supported by the platform. In areas where libraries like MathJax are not good enough, we'd love to hear feedback about what APIs we would need to expose so that MathJax, et al, can create an awesome MathML implementation." This, coupled with the fact that WebKit MathML wasn't up to snuff, is a pretty good rationale IMO. Standards-compliance is a means to an end (interoperability), doesn't mean browsers should implement every niche spec that someone comes up with. I want my VRML first, at least ;)