Artspeaking topic

In the 'Creation of Adam' scene on the Sistine Chapel ceiling, why is the image of two hands almost touching so iconic?

Michelangelo, 'The Creation of Adam', Sistine Chapel (1512)

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.