就大猩猩在片中所受到的待遇来看，这部电影的大部分内容都是来源于现实的，正如《尼姆计划》这部基于伊丽莎白·赫斯的著作《尼姆·猩猩斯基：一只可能是人类的黑猩猩》的记录片所明确表述的那样。
As far as the treatment of apes is concerned, much of the film is firmly grounded in reality, as a viewing of Project Nim, a documentary based on Elizabeth Hess’s book Nim Chimpsky: The Chimp Who Would be Human, clearly demonstrates.