"Once digitized, a page of words loses its fixity. It can change every time it's refreshed on a screen. A book page turns into something like a Web page, able to be revised endlessly after its initial uploading. There's no technological constraint on perpetual editing, and the cost of altering digital text is basically zero. As electronic books push paper ones aside, movable type seems fated to be replaced by movable text.
But as is often the case with digitization, the boon carries a bane. The ability to alter the contents of a book will be easy to abuse. School boards may come to exert even greater influence over what students read. They'll be able to edit textbooks that don't fit with local biases. Authoritarian governments will be able to tweak books to suit their political interests. And the edits can ripple backward. Because e-readers connect to the Internet, the works they contain can be revised remotely, just as software programs are updated today."
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