Imagine for a moment that the most advanced spaceship visited Earth in full view of the planet’s inhabitants. From this spaceship, a humanoid life form named Klaatu emerges, followed shortly after by a menacingly large robot. Klaatu’s message to the people of Earth is revealed in one of the climactic exchanges of this story with the protagonist, Helen Benson, a young female scientist that was at the forefront of her field:
Helen Benson: I need to know what’s happening.
Klaatu: This planet is dying. The human race is killing it.
Helen Benson: So you’ve come here to help us.
Klaatu: No, I didn’t.
Helen Benson: You said you came to save us.
Klaatu: I said I came to save the Earth.
Helen Benson: You came to save the Earth… from us. You came to save the Earth from us.
Klaatu: We can’t risk the survival of this planet for the sake of one species.
Helen Benson: What are you saying?
Klaatu: If the Earth dies, you die. If you die, the Earth survives. There are only a handful of planets in the cosmos that are capable of supporting complex life…
Helen Benson: You can’t do this.
Klaatu: …this one can’t be allowed to perish.
Helen Benson: We can change. We can still turn things around.
Klaatu: We’ve watched, we’ve waited and hoped that you would change.
Helen Benson: Please…
Klaatu: It’s reached the tipping point. We have to act.