Earlier quoted context omitted.
The more one studies computer science, the less one believes that information can be owned in any meaningful way. I remember reading a paper on a "lightnet" that basically XORed arbitrary blocks of data together, then produced a recipe on how to recover some original data by XORing the appropriate blocks. With just this recipe you could ask other nodes for the random blocks, then recover the original data locally. Th…
I feel this is dealt with by the fact that law has a concept intention. Handing out the recipe for reconstructing the pirated material counts as aiding piracy, I would say.
There's definitely the undecidable concept of intention, but there's also an undecidable concept of identity: for example, when is an MP3 file "the same" as a copyrighted song? You can encode a copyrighted song into different bitrates, swap left/right channels, slightly pitch shift, apply equalization, etc. Most likely, given some algorithm that tests audio identity, you could always come up with a way to create a copy that sounds the same to a human but is missed by the computer.
Granted, the fingerprinting algorithm used by YouTube is pretty good: http://www.csh.rit.edu/~parallax/