OK, what defines "a person"? Is a beaver a person, or a bird a person? Is a rock a person? — Metaphysician Undercover
As someone interested in philosophy, this is a good thing for you to think about, as it has long been seen as an important ontological issue that's often very contentious. It's as important as asking, say, "What is/what is to count as justification?" in epistemology.
My comments above do not hinge on a particular definition of personhood, so I don't want to sidetrack things by arguing about that. Any commonly proposed definition you like (with an emphasis on "commonly proposed") would be fine to use. But of course, we have to be familiar with the personhood issue in philosophy to be familiar with commonly proposed definitions.
Here's a bit of background courtesy of two of the most commonly cited sources. It's worth reading the two articles in full (SEP:
https://plato.stanford.edu/entries/identity-personal/ ) (Wikipedia:
https://en.wikipedia.org/wiki/Personhood)
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SEP: "What is it to be a person, as opposed to a nonperson? What have we people got that nonpeople haven’t got? More specifically, we can ask at what point in our development from a fertilized egg there comes to be a person, or what it would take for a chimpanzee or a Martian or an electronic computer to be a person, if they could ever be. An ideal account of personhood would be a definition of the word person, taking the form ‘Necessarily, x is a person at time t if and only if … x … t …’, with the blanks appropriately filled in. The most common answer is that to be a person at a time is to have certain special mental properties then (e.g. Baker 2000: ch. 3). Others propose a less direct connection between personhood and mental properties: for example that to be a person is be capable of acquiring those properties (Chisholm 1976: 136f.), or to belong to a kind whose members typically have them when healthy and mature (Wiggins 1980: ch. 6)."
Wikipedia: "Personhood is the status of being a person. Defining personhood is a controversial topic in philosophy and law and is closely tied with legal and political concepts of citizenship, equality, and liberty. According to law, only a natural person or legal personality has rights, protections, privileges, responsibilities, and legal liability.[1]
Personhood continues to be a topic of international debate and has been questioned critically during the abolition of human and nonhuman slavery, in theology, in debates about abortion and in fetal rights and/or reproductive rights, in animal rights activism, in theology and ontology, in ethical theory, and in debates about corporate personhood and the beginning of human personhood.[2]
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