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Cory's Guardian column explaining DRM's impossibility to non-geeks

September 4, 2007 7:14pm

Is there really a rigorous physical law or mathematical proof that DRM is impossible?
I mean rigorous, not by way of analogy or platitude, as "If it can be seen/heard/read, it can be copied."
(Hmm... maybe that's it!)

It's intuitively obvious, but if you have a theorem or law, then, End of Story, no? Just as they won't grant a patent on a perpetual motion machine, you cannot legislate something physically impossible. (I know, I'm living in a fantasy world - it doesn't stop Congress from doing it anyway!)
I'm guessing it is some combination of the Halting Problem and the 2nd Law of Thermodynamics. Takers?

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