Original Mac calculator design came from letting Steve Jobs play with menus for 10 minutes
PositiveTechnology

In 1982, a young Mac developer allowed Steve Jobs to experiment with menus for just ten minutes, which unexpectedly led to the design of the original Mac calculator. This brief interaction transformed Jobs into a UI designer and resulted in the accidental invention of a new design technique. This event is significant as it highlights the importance of user experience in technology and how a simple moment of exploration can lead to innovative advancements in design.
— via World Pulse Now AI Editorial System