> why can't we justify caging people who have the mental capacity of a 6 year old.
They do that all the time in psychiatric hospitals. They are just a bit nicer about it these days.
No, it makes a lot of sense. Treating all species the same would make very little sense. Do bacteria have the same rights as lice which have the same rights as mice which have the same rights as dogs which have the same rights as whales?
In reality, it is a scale. How much we care about an animal varies depending on how big it is, how intelligent it is, what it is capable of and how it interacts with our lives. To pretend every species is the same is just wilfully naive.
In regards orangutans we can certainly do a better job of ensuring both can exist.
According to what scale?