Sciencespeaking topic
A rumor, a fashion, a revolution affects no one for a long time; then once a critical number of people adopt it, it spreads to everyone at once. Behind that 'all at once' there's a mathematical threshold. Why do ideas behave like viruses, and why does most of them never catch on?
— threshold models / social contagion
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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