There exist cases where the difference in origins of a human body is such that neither natural language nor intuition determines whether that difference alters the body's identity.
Natural language(as used in logic and linguistics)
Language as people actually speak and write it (like English or French), rather than artificial systems created for specific purposes.
Origins (in philosophy)(as used in metaphysics)
Where something came from or how it was created. In this case, it refers to different ways a human body might have come into existence.
determines(Ontology of properties; determinable-determinate relation)
A relation between properties where one property is a more specific way of being the other; property A determines property B if and only if to be A is to be B in a specific way
Let us now apply this thought to conscious subjects. Suppose that a given human individual had had origins different from those which he in fact had such that whether that difference affected who he was was not obvious to intuition. What would count as such a case might be a matter of controversy, but there must be one. Perhaps it is unclear whether, if there had been a counterpart to Jones’ body from the same egg but a different though genetically identical sperm from the same father, the perso