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Re:Java.sun.com is down - breaking builds across the land by andrewf on Monday October 10, 2011 @12:54PM (#3094601)
The point of those hardcoded URIs is to be a unique identifier. You really aren't supposed to load them all the time.

HTML 4.01 documents are supposed to start with:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd>;

The intent was not for web browsers to hit up the W3C every time they loaded a web page.

Re:Java.sun.com is down - breaking builds across the land by jmount on Monday October 10, 2011 @03:45PM (#3095453)
Yes, but under many common circumstances a lot of libraries load the DTD. Really should have used a different name space to make the idea more clear.