Some discoveries come at the last hours of the life.
When a movie is based on the play, setting wise it will be a tight narration. But the advantage is, movies can expand its screenplay in the natural world where stage plays has a limitation with the fake backgrounds. And obviously movies can reach any corner of the earth in the todays digital world while plays are for a limited live audience. So I think that is how this play turned into a motion picture, importantly, it was funded by the government and all the above it won a couple of Australian Academy Awards.
