Making friends is hard, and it's probably even tougher when small talk is impossible. Try talking about complex philosophies instead. Identity of Indiscernibles is all about determining how to identify 2 identical objects...like...how?!

Sources:

https://en.wikipedia.org/wiki/Identity_of_indiscernibles#:~:text=The%20identity%20of%20indiscernibles%20is,by%20y%20and%20vice%20versa.

https://plato.stanford.edu/entries/identity-indiscernible/