I am confused. In the USA, there has been a clear rule that machine-generated code cannot be copyright. If the "new implementation" was in fact created by Claude (which is my impression), then nobody holds any copyright to the code, and it cannot be licensed under any license at all. I am sure I am missing something ... what is it?
Unless the human is so far removed from the output. (And how far is far enough is probably very much depends on the circumstances and unless/until case law or Congress gives us some unifying criteria, it's going to be up to how the judge and the jury feels.)
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For example someone set up a system where their dog ends up promoting some AI to make video games. This might be the closest to the case of that photo.
Though there the court ruled only that PETA (as friend of the monkey) cannot sue the photographer, because the monkey cannot be a copyright holder, but very importantly it didn't rule on the authorship of the photographer. (And thus the Wikimedia metadata which states that the image is in thr public domain, is simply their opinion.)