There are fairly few bright-line tests, because they're hard to write. For instance, consider your proposed test: The copyrightability of works would change re

There are fairly few bright-line tests, because they're hard to write. For instance, consider your proposed test: The copyrightability of works would change retroactively depending on the capabilities of AI. Something that can't be reproduced by AI today could be next year. Is that a desirable outcome?