> We'll also have brain-machine-interfaces that allow one to 'memorize' copyright media. How does the government/society plan to control our memories in the future?

We can memorize copyrighted media now, without needing brain-machine-interfaces. I have hundreds (probably thousands) of copyrighted works memorized. My memory is not perfect, but it retains enough of these works that if I were to recall them and write down my recollections and distribute that, I would be infringing their copyrights.

I don't foresee copyright law needing to be or actually being changed in response to the development of more efficient ways to get copyrighted media into our brains, such as brain-machine-interfaces.