Our own bodies are ships of Theseus. I've read once that every atom in our bodies are replaced in 40 years. In 40 years, our bodies change a lot and so are our

Our own bodies are ships of Theseus. I've read once that every atom in our bodies are replaced in 40 years. In 40 years, our bodies change a lot and so are our minds. What make Theseus' ship the ship of Theseus, is that Theseus is the owner of the ship. Ownership is a social convention, a construction of the mind. What makes Notre Dame, is that people generally agree it is still Notre Dame. If hypothetically we were in a time of modernism craze, and that our government decided to rebuilt it in some modern style (there actually was proposals like that), it would still be the people who makes it Notre Dame de Paris or not.