Quote:
Originally Posted by Hadrien
You're the only one having a philosophical argument here: I'm pointing out that the standard requires such a unique identifier and that reading systems will use it too.
It can be catastrophic if one day we wish to handle such things such as shared annotations as we won't be able to rely on the identifier to identify a book (which is the whole purpose of an identifier).
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Speaking
practically rather than philosophically, is there any software which will fail if a book does
not have a unique ID?