Sciencespeaking topic
If you watch someone fall into a black hole from the outside, you never see them fall in; they seem frozen at the edge forever. But for the person falling, it's all over in an instant. The same event, utterly different for two people. Which one 'really' happened?
— black hole / event horizon
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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