proponents reject the idea that only works in the public domain can provide artistic inspiration. they note that opponents fail to take into account that copyright applies only to expressions of ideas and not the ideas themselves. thus artists are free to get ideas from copyrighted works as long as they do not infringe. borrowing ideas and such are common in film, tv and music even with copyrighted works (see "scènes à faire", idea-expression divide and stock character). works such as parody benefit from fair use.