They say a picture is worth a thousand words. Well, here's one that vividly illustrates why putting DRM on e-books is short-sighted, futile, and doomed. If you must have words, here are a few explaining this photo. And here are a few more wherein Microsoft security engineers explain in their 2002 "Darknet" paper why all DRM like this is doomed to fail.

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That is actually a brilliant idea.