> The state of my brain is outside of copyright.
Is it actually? If we could fully pull out the state of your brain, and understand that you stored a copy of a copyrighted work, I think you could be on the hook for licensing it, paying fees every time you remember the work as a performance of it.
When I read and remember a text, possibly also learning from it, I'm not making a copy and I'm not creating a derivative work. The state of my brain is outside of copyright. Only at the point where I create a new representation based on what I have read I may be violating someone's copyrights.
But is it the same for an AI? Is the act of reading, remembering and learning (i.e. adjusting model weights) not in itself tantamount to creating a derivative work?