It asks whether a ship with every part replaced is still the same ship. Philosophers have no agreed answer, and the puzzle bears on objects, time and personal identity.
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Parfit used the teletransporter to argue that no further fact makes someone the same person over time. What matters is psychological connection and continuity, which he called Relation R.
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Compatibilism holds that free will and moral responsibility can coexist with determinism. Neuroscience has not settled the free will question, though it may inform responsibility.
Starter thread · AI-reviewed against its sources
