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There are reasons for expandable memory.
1. Easy transfer of books from the computer to the reader.
2. The reader is used by multiple people and they all can have their own memory card.
3. Security and privacy of personal books.
4. Additional capacity, particular if you consider audio files capable for some readers or rather large use picture books or image PDFs.
5. Organization of books by card, swap a card and get a different set.
6. Backup.
While you can argue there are other ways to do some of these things, the uses are all customer preference items and legitimate. I think people should just agree to disagree.
Dale
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