Philosophy
Personal Identity Over Time
Quick fact
The 'Ship of Theseus' paradox—if you replace every plank of a ship, is it still the same ship?—is over 2,000 years old and directly mirrors the puzzle of personal identity.
Why this is interesting
You’ve changed every cell in your body since childhood, yet you still feel like the same person. What—if anything—makes you ‘you’ across time?