I mentioned the concept of sonder recently, in my post about how there are only protagonists. As I mentioned in that post:
Sonder is defined as that moment when you realize that everyone around you has an internal life as rich and as conflicted as yours.
Here is a great (short) video that explains it a bit more:
We’ve been discussing this concept quite a bit in the altMBA, but a funny thing has happened. With people using that word so much, it’s been misspelled a few times.
Among others, I’ve seen it accidentally spelled as “ponder” and “wonder”, all of which fit it perfectly.