If biological capacity-restoration is neither necessary nor sufficient for the persistence of the entity that matters, revival and restoration are functionally equivalent under the description that is philosophically relevant.

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biological capacity-restoration(as used in philosophy of identity): The process of fixing or rebuilding the physical, living systems of something—like repairing a body's biological functions.
entity(as used in metaphysics): Any individual thing or being that exists—could be a person, object, or anything else that is one distinct thing.
functionally equivalent(as used in philosophy of mind and metaphysics): Two things that work the same way or produce the same results, even if they're different in other ways.
necessary and sufficient conditions(in philosophical analysis): A 'necessary' condition is something that must be true for something else to happen; a 'sufficient' condition is something that guarantees it will happen. This phrase describes what must be true (and what's enough) for a definition to apply.

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