Philosophy of Mathspeaking topic
How does the Banach-Tarski paradox make it possible to cut a sphere into pieces and reassemble them into two identical spheres, and why is this a mathematical oddity rather than a physical one?
— the Banach-Tarski paradox
practice with this topic
Set the timer (5-30 min), take 20 seconds of prep if you like, start talking. Jot your thoughts onto the sticky-note board.
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