> This is useful when you simply can’t hear someone very well or when the speaker makes a mistake

I have a few friends with pretty heavy accents and broken English. Even my partner makes frequent mistakes as a non native English speaker. It's made me much better at communicating but it's also more work and easier for miscommunication to happen. I think a lot of people don't realize this also happens with variation in culture. So even within people speaking the same language. It's just that the accent serves as a flag for "pay closer attention". I suspect this is a subtle but contributing problem to miscommunication on the and why fights are so frequent.