Philosophy of Mathspeaking topic
Color a map however you like: if neighboring countries must differ, four colors always suffice, never a fifth. Why exactly four? A computer proved it, but no human has ever 'seen' the whole proof. Is knowing without understanding still proof?
— the four color theorem
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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