The Conversation just published an article that tries to compare the environmental costs of eReaders and shelfs of books. While overall that is a good article, I see no mention in it, or in the comments, of three important facts about reading, readers and ICT. First, all kinds of information can be digitized, e.g. coded as bits, and all bits are equal. The same USB drive can store books, movies, music and so on, and the same electronic devices can play them all.