ambiguity

tolerance for ambiguity in language communication

There is an interesting problem that is often not recognised in language learning.  Interlocutors often don't understand each other but because of our tolerance for ambiguity in communication, we often don't let on that we don't understand the other person.

It is especially the case with small talk.  Small talk is not so much about exchanging information as it is about maintaining relationships.  So, it doesn't really matter if interlocutors don't understand each other well.

Language learners are often encouraged to say so when they don't understand something.  But it is only necessary when exchanging information or getting things done.