What is sonder def?

Sonder is a term created by John Koenig in his Dictionary of Obscure Sorrows, and it refers to the realization that the strangers around us have complex lives as intricate and personal as our own. It's the sensation that everyone around us has their own story, their own anxieties, and their own hopes. The feeling of sonder can sometimes lead to empathy and understanding of other people, the idea that others are not just objects in our world, but have their own rich inner lives. This idea has been popularized through social media and the internet, where people can share their own personal stories and connect with others who have experienced the same feelings of sonder.