Its so beautiful how whenever we speak to anyone there is so much common knowledge assumed that actually allows the communication to function, common ground in use of language, cultural norms, life, knowledge, politics etc.
Whenever you think you don't have anything in common with someone - YOURE WRONG! You have so much already and you can simply make / find more
Also doing a class in this rn and my teacher wrote the Stanford encyclopaedia of philosophy article on this - having a fanboy moment that's so cool