Alex R. wrote:
If Wikipedia authors do not assert their rights they will lose them.
That applies to trademarks, but not to copyrights. Whether you defend copyrights or not, you always keep them.
if Wikipedia wanted to give it away it would all be put into the public domain. It is not in the public domain, it is under a complex license that needs to be followed.
Ironically, the bulk of [[Chest strategy and tactics]] was written by me and is therefore in the public domain.
Axel