Problem: Peter Singer initiated the modern animal rights movement with his book, Animal Liberation.
Singer is a utilitarian; he thinks that causing pain is wrong. So, if we can survive on a plant-based diet that does not cause animal suffering, we should do that.
Tibor Machan denies that animals have rights. He thinks you must be a moral agent to have rights, and animals are not moral agents, that is, they don't make free moral choices.
Who do you think is right?
Provide a substantive reply to a classmate's post.