alt Hacker NewsI have no opinion either way but this doesn’t follow. I can imagine a world where people don’t need oxygen to breathe but they still do. If we say people need oxygen, the argument is obviously about the world such as it is rather than the world as it could hypothetically be.
This is untrue. You cannot imagine a world where people, without changing the definition of people, don't need oxygen to breathe.
"they still do" is just begging the question. Plenty of people live without working. We're ruled by people who don't work.