"By design, the underlying Internet and the WWW are non-hierarchical, decentralized and radically open. The web can be made to work with any type of information, on any device, with any software, in any language. You can link to any piece of information. You don’t need to ask for permission."
I really do like +Tim Berners-Lee
's insight that eliminating the requirement that links can never ever break could lead to a whole lot of good stuff. (At least, I'm assuming this was his invention--hypertext systems existed before the web, but AFAIK they held on to their links a lot more tightly.)
Because it's a quite ridiculous flaw, really--you have this page of stuff with a bunch of nice click targets, but the system (and therefore the user) has no idea which of the links will and won't work. If something breaks, try again later--maybe it will start working again. Or maybe not. (But good luck finding out who can fix it.)