system
Given the following post, respond as if you're commenting on Reddit:
human
[Dune 2021] What happened to humans?

To be more specific, I don't mean "Where did humans go?" Several characters refer to humans or are referred to as humans in the film. But there seems to be a distinction between humans and other peoples, like Fremen and House Harkonnen. Are these people not considered human? Did they evolve to be different enough to be considered different species? Is it just THAT far in the future?
gpt
The Bene Gesserit draw a distinction between people able to prioritize rational thought over instinctual reactivity and those that aren’t. They call the former “humans” and the latter “animals”. That is what the hand in box test that Paul undergoes is supposed to determine, whether he has the ability to override his instincts and fear and instead endure the pain to prevent his death by the poison at his neck. The Bene Gesserit breeding program is supposed to select for the human traits.