Regarding Postscript vs web: I'm only talking about device independence. Specifically in the case of pixel perfect layouts. I am not talking about the layout co

Regarding Postscript vs web: I'm only talking about device independence. Specifically in the case of pixel perfect layouts. I am not talking about the layout constraint problem, which is extremely challenging no matter the technology. But layout constraints depend on a solid notion of coordinate system, which the web lacks. Device independence gives you that in postscript and SVG. Besides, windows faces a similar problem of multiple resolutions and devices. How do they v&v? They set the resolutions the same for certain tests! Even if you do this for browsers, they cant pass the test. Yes, it would be nice if we could have device independent layout constraints as well, but even the simplest most constrained test not involving layouts fails. At least now, its close. Before ACID it wasn't even close. If webdevs can't even rely on their browser coordinate system in the most heavily constrained case, how can they hope to trust it when they try to solve challenging problems of dynamic layouts across multiple resolutions?