Thinking · How to Think

Think about it:

Replace every Lego in your model. Is it still yours?

Imagine you build a Lego model. Then, one piece at a time, you swap each brick for a brand-new identical brick. After the last swap, every single piece is different from the original. Is it the same model? Or a different one? An ancient Greek thinker named Theseus asked this exact question about a ship — 2,400 years ago. Nobody has agreed on an answer since.

1 min read
Why does this matter?

Every cell in your body gets replaced over time. Most of you is brand new every 7 years. So… are you the same kid you were? It's the same puzzle, just with you instead of a ship.

Talk About It Tonight

Are YOU the same person you were five years ago? Most of your cells have replaced themselves.

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