Living in a big city after living in a relatively quiet town all my life

Feels so strange... Its like everyone are so hyper focused on themselves, they rush past each other putting each other in danger every time they go to work. They dont see you as you walk past them. It feels like dissociation on a societal scale.

It makes me understand why people from here seem cold. They never got to learn the complexities of socialising with people outside of your circle. How to be polite for example.