• To: 'Michael Kay' <michael.h.kay@n...>, 'Liam Quin' <liam@w...>, 'xml-dev' <xml-dev@l...>
• Subject: RE: Number of active public XML schemas
• From: "Bullard, Claude L (Len)" <len.bullard@i...>
• Date: Mon, 1 Nov 2004 15:15:28 -0600

True enough but the question is why there 
are so many DTDs in use.  Because the simple 
applications are the most common and that 
means they aren't trivial.
  
Some learn to do without the complexities of 
parameter entities and conditional sections, thus 
their world is simple, spec'd, and reliable.

Complexity is a place one passes through while searching 
a very crowded world of similar but different things.  
It becomes simple when one can safely ignore the 
differences and pick one.  Complexity is a property 
of the space of choices.  Simplicity is a property of 
the act of choosing.

len


From: Michael Kay [mailto:michael.h.kay@n...]

> 
> Or because they [DTDs] are easier to understand, 

I have yet to see a DTD of more than trivial size that is not totally
impenetrable. And fragile too, if you are rash enough to make a one line
change that breaks an entire edifice of parameter entities and conditional
sections.

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