Sciencespeaking topic

In reality your eyes are constantly jumping around in tiny leaps, and during those leaps the brain briefly shuts off the image; otherwise the world would smear. So every day there are minutes when your eyes are effectively 'off,' but the brain won't let you see those gaps.

— saccadic blindness

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.