Imagine this:
Some mystic invents a new meditation technique.
You can go to a movie, watch it and remember it.
Later, you go into a trance, and enjoy the whole
thing again.
Is this piracy? Does it violate that statement
at the beginning of the film prohibiting the storage
of the content on "any recording device" ie your brain?

If you had perfect memory, would it be illegal for
you to know or remember any "proprietary content"?
Interesting point. This isn't completely unrealistic. When Mozart was 5 he remembered an entire piece of music after listening to it just once. This particular piece had been "copyrighted" by the church. No one was allowed to see the actual sheet music for the piece. Mozart wrote the whole thing down from memory and the church's secret was out.

What if the same sort of thing we're to happen today? Will companies soon start confiscating peoples brains?