What the 'door close' button in Hong Kong lifts reveals about selfish city | South China Morning Post
![Jay Van Bavel on Twitter: "I've created a single-item measure of pro-sociality: It is simply whether you press the elevator "door open" or "door closed" button when someone else is racing to Jay Van Bavel on Twitter: "I've created a single-item measure of pro-sociality: It is simply whether you press the elevator "door open" or "door closed" button when someone else is racing to](https://pbs.twimg.com/media/D5sIdyQWwAA6U1n.jpg)
Jay Van Bavel on Twitter: "I've created a single-item measure of pro-sociality: It is simply whether you press the elevator "door open" or "door closed" button when someone else is racing to
![How can the design for elevator/lift door open/close buttons be improved? - User Experience Stack Exchange How can the design for elevator/lift door open/close buttons be improved? - User Experience Stack Exchange](https://i.stack.imgur.com/SBciq.jpg)