RE: [xml-dev] XPath and a continuous, uniform information space - Recap

*** Michael Key
Well, not entirely. You would still break the presumption that (with the exception of type annotations and base URI) there's a lossless round-trip conversion between XDM nodes and lexical XML.
***

Ok curious, I will bite where is the loss.
( we already have a huge gaping hole in XDM round tripping ... )  

What part of a map embedded as nodes in XDM , discarding node identity and parentage, is not round trappable ?
The only thing I can think of is ordering of child nodes ... but that assumes map keys are unordered.
Map keys could be ordered ... 

Anything else that would be lost ...

And yes this will totally break XML ... so no argument there.
-David Lee