WHATWG HTML and W3C HTML both define a valid syntax for content, as well as parsing rules that cover everything, even error cases. Postel's Law states: "Be cons

WHATWG HTML and W3C HTML both define a valid syntax for content, as well as parsing rules that cover everything, even error cases. Postel's Law states: "Be conservative in what you do, be liberal in what you accept from others.". Modern HTML standards codify this rule in a serious and detailed way. I think Jon Postel knows more about real standards than you do. People with your attitude are a big part of why the W3C HTML Working Group failed. It's easy to expound on what Real True Standards should be when you have no real skin in the game. Those with a real stake in the result care about what actually works instead, and have no time for this kind of philosophizing.