Philosophyspeaking topic
Descartes's evil demon: could all your perceptions be a deception, and how do we know we really exist? If everything can be doubted, what remains certain?
— René Descartes, evil demon
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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