What is the Ship of Theseus paradox?

ILLUSTRATES Thales Molina

QUESTION Kauê Locatelli, Bento Gonçalves, RS

1) I am the myth

Result of a double relationship between Edra and Aegeus (king of Athens) and Poseidon (god of the seas), Theseus was important in Greek mythology. His best-known feat was defeat the Minotaur in the labyrinth of Crete, which fed annually on seven Athenian boys and girls, as part of a tribute imposed by the king of Crete.

2) Pierced boat

Parallel Lives, by the Greek thinker Plutarch, proposes the following: Theseus part of ship from point A to point B. But over the course of a 50-year voyage, he replaces every part of the boat as it wears out, until they’ve all been replaced. Here’s the paradox: you can say that the ship What arrived at B is the same as what left A? Or is it another?
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3) The spirit of the thing

Many philosophers have tried to solve the riddle. Heraclitus compared the ship and its parts to a river: its waters are constantly renewed, but it is always the same. Aristotle established that a thing is defined by four causes: formal, material, final and efficient. In his analysis, between points A and B, the ship it only changed its material cause, so it was still the same.

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4) Burning the neurons

Modern philosophers have also guessed. Gottfried Leibniz concluded that it did not, using the logic that “X is the same as Y if and only if X and Y have the same properties and relations and whatever is true of X is also true of Y”. Thomas Hobbes, on the other hand, added fuel to the fire: if a second boat assembled from discarded parts, which of the two will be considered theship in Theseus?

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5) Eternal Doubt

The paradox also gained new versions. Philosopher John Locke thought about a sock with holes: if the hole is mended, would it still be the same sock? If one day the teleportation is possible and someone is molecularly “disassembled” at point A and reassembled at point B… will it be the same person? Will he have the same memories and the same personality?

SOURCES site HypeScience; books Compact Mini-Dictionary of Mythologyby Nadia Julien New Essays on Human Understandingby Gottfried Leibniz, de corporeby Thomas Hobbes, and Botequim philosophyby Matt Lawrence

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