Final answer:
The terms 'Posthumous existence' and 'Prenatal existence' relate to the period after death and before birth, respectively. They tie into philosophical discussions about existence, such as those involving Nagel, Anselm, and Kant. Specifically, Kant's refutation of Anselm's view that existence is a property that can be possessed by an entity like God is a fundamental part of this discussion.
Step-by-step explanation:
The terms 'Posthumous existence' and 'Prenatal existence' refer to existence after death and before birth, respectively. Although the question seems to be misspelled, it appears to relate to considerations of existence outside of life as we commonly understand it. These concepts can tie into philosophical arguments about the nature of existence, such as those discussed by Thomas Nagel. Nagel is a philosopher who has written extensively on various topics, including the philosophy of mind and the concept of what it means to exist.
Philosophical arguments about existence often involve Immanuel Kant's critique of the ontological arguments for God's existence put forward by Anselm. Kant contests Anselm's claim that existence can be treated as a predicate or property that a being can possess. For example, Anselm's notion suggests that if you can conceive of a God, then that God must exist because a God lacking existence would not be the greatest conceivable being. In contrast, Kant argues that existence is not an actual property that can be attributed to an entity, and that something does not become greater by merely possessing the attribute of existence.
In summary, the discussion about what it means to exist, both prenatal and posthumously, can be connected to Nagel's philosophical inquiries and to broader philosophical discussions about the nature of existence, as seen in the debates between Anselm and Kant.