A friend of mine once got a job writing Donald Duck cartoons for a Danish publisher..
When he was about to start he was told, "Don't try to write about something that Donald has not done. He has done everything, so just write your stories and that will be enough."
The point was not to discourage creativity, but to create free from the burden of coming up with something novel. Consider how much time could be saved if we just gave up having to seek outside of ourselves.