The discussion of snake's sentience reminded me of an argument I once made about the nature of pureblood discrimination against Muggles, which I'll reproduce here:
Consider how we, as humans, justify our definitions of personhood. Why do we say that chimps, for example, are not people? Essentially, we come up with a list of features which we have, and things which aren’t people don’t have, like talking, tool use, etc. and then say everything which looks very similar to something which has those features is a person (why, for example, we consider a severely ...
I'm not so much talking about the legal definitions, as about the basic intuitions that form the framework for the moral reasoning that goes into determining behaviour and then the formal laws and systems that govern them.
It's one of the priors that someone with a non magical upbringing may never consider, that the basic foundation of moral reasoning is different for pureblood wizards.
That other sapient beings have weight as moral actors is pretty basic, and if pure bloods were to instead use a different intuition as the starting point for moral construct... (read more)