I mean to the specific part stating than any work based on previous collaboration has also the freedoms to “use, study and share”.
That is my concern, and that is why is better a model on which anyone can use Fractal Future, as long as they agree on providing these same freedoms on any work based on it.
With LGPL we can guarantee that only the work based upon Fractal Future is going to be under this, and any author can still include parts of this work on their own without having to release their entire work under this license too, because this license permits including pieces inside closed source works.
What Stallman did is stating clear that only derivatives fall on the category, allowing stuff like open sourced shared libraries to be included in non open sourced work.
Therefore, LGPL is not GPL, one is more permissive, and the other is what is called a “strong copyleft”.
I would say the order on which I would agree is:
In that way CC-BY would be our closest agreement thus far until Joao states his position.
Let me remark than this debate will make clear why we took the decisions we made for future reference. Anyone that joins can now on understand and be pointed to what has been spoken over the subject.