[mr_toad]

> If you look at licensed code, then write new code, do you also bring in those licenses?

If the “new” code is close enough to be considered a derived work then you will need a license.

[MuffinFlavored]

> If the “new” code is close enough to be considered a derived work then you will need a license.

And how is that determined... in court at trial? By an unbiased 3rd party competent enough to understand both codebases?

[m00x]

Same for all programmers out there. Copilot will need to be careful, and like with everyone else, they'll learn.