I think the encrypted DVD is the best analogy I've heard so far. In fact, I once asked an actual lawyer about the information-theoretic questions raised by ill

I think the encrypted DVD is the best analogy I've heard so far. In fact, I once asked an actual lawyer about the information-theoretic questions raised by illegal/infringing content known to be on an encrypted storage device. Her answer was "Yeahhhh, no, the Judge is probably not going to see it that way." :-)