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> Yes, but it is much more difficult to ensure that a suite of programs are
> all doing these checks for all of the elements and attributes of a document
> that represent typed data.
Not really. In the cases where the distinction matters you can validate
before and/or after the transform, the number of times when you really
need to carry the distinction around through your entire transformation
would be minimal I'd guess. It's just a rather strange ad hoc set of
types that happen to have been lumped into the W3C schema schema spec.
While they're just there they are not doing that much harm, just making
the spec a bit bigger. But Xpath2 is showing the dangers of letting that
go by without comment. The arbitrariness in the types available in W3C
Schema is now bloating other specifications. There is a difference
between supporting the use of W3C Schema and just slavishly
incorporating any horrors in the schema spec into every following
specification from the W3C.
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