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Paper books are going to die
Ebooks will outnumber paper books. They are cheaper and more practical
Ebooks save space. Thousands of books can be stored in one device that is even smaller than one paper book
Ebooks themselves may be cheaper, but for the price of a $200 Kindle, and a $10 ebook, a person can go to a second hand store and buy 210 $1 used hardcopy books. 210 used books is way better than one ebook and a Kindle. They feel nicer, they look nicer, and they'll entertain someone much longer.