Dear Log,
«With SGML, after thirteen years of implementation there were fewer than half a dozen SGML processors in the world, and with the single exception of James Clark's, all of those processors had been constructed by efforts that were Department of Defense sized efforts.
So you just look at that and you say, well, I guess that SGML is probably a little on the far side of the complexity we want.»--Jon Bosak, "the father of XML", in an interview with Javaworld