 We don't consider turning left on our way to work if we always turn right. We don't wonder what is going on to the left of us because it's irrelevant. We've learned that it's irrelevant. And at a social level, we've learned that some topics are irrelevant. They're not that important to us. Some people are irrelevant or not that important to us. And even when we're talking to someone we know and have some affiliation with,