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Sams Teach Yourself XML in 24 Hours, Third Edition by Michael Morrison

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Chapter 8. Validating XML Documents

 

In the future, airplanes will be flown by a dog and a pilot. And the dog’s job will be to make sure that if the pilot tries to touch any of the buttons, the dog bites him.

 
 --Scott Adams

In the quote, the job of Scott Adams’s dog is to prevent human error in piloting an airplane. The idea is that computers will have things enough under control that human pilots will only get in the way. Although the complete removal of human pilots is not too probable in the near future, the prospect of computer-flown airplanes highlights the need for rock solid software systems that are 100% error free. Whether or not you look forward to flying on an airplane piloted entirely by computers (I, for one, do not!), as an XML developer ...

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