Warning: nerd alert.
That reminds me of this one StarGate SG1 episode, “Pretense”. For those of you who don’t know StarGate, there are certain beings called Goa’uld, larva-like parasites, which take unwilling humanoids as hosts. They then use these humanoids to act and communicate, forcing their will unto them.
In “Pretense”, there’s an alien trial on whether a Goa’uld, Klorel, or an original host, Skarra, has the higher claim to the body. Here are some transcripts:
Skarra: I was born to this body. Free of the demon Klorel. He stole my body. On Abydos [his home planet], I would have married, had children, grown old, and died. But the Goa’uld took more than my body. He stole my life.
Goa’uld lawyer: Tell me, did the people of Abydos hunt?
Skarra: Yes.
Goa’uld lawyer: Do you also eat the flesh of humans?
Skarra: No! Never!
Goa’uld lawyer: Then you make judgment that animals have a lesser value than humans. […] but you keep them to do your will. And you kill them to survive. […] As we do with humans. When we have the need. If a human has the right to take an animal’s body as he pleases because he is a superior being, so does a Goa’uld. And by that argument alone, the Goa’uld has priority.
Jack O’Neill: Humans are self-aware. Animals aren’t.
Goa’uld lawyer: Animals are not, because you deem them not to be. Just as we deem humans not to be.
…
This episode reminded me a lot of the whole natural rights debate. So much depends on perspective.