younger people find that responding to a text message in the company of others is reasonable, because you can integrate it into the pauses of the conversation, but that unplanned phone calls are a gross interruption because they demand your attention instantly, completely, and unpredictably. Older people are perfectly happy to interrupt or be interrupted by a voice call, because they’re unexpected and therefore urgent, but find the sight of someone texting an imposition, precisely because you could have put it off until after the conversation entirely.
