How using gestures can make you smarter
Go into any busy coffee shop and you are likely to see people engrossed in conversation, waving their hands around. A man at the counter describes the coffee he wants to buy – in a mug, not a to-go cup – and his hand takes a familiar shape, as if he were already holding the cozy mug. Nearby, two sisters laugh, as one tells a story about a trip to the barrier reef and all of the fish that she saw, her hands wiggling and darting in an invisible sea in front of her. The drive to gesture when speaking is fundamental to human nature.