“Not that other modes of communication aren't useful, of course.”

You're having a discussion with a friend about the ways that young people communicate these days. You've said that you think face-to-face communication is the best way to communicate with people. But you don't want your friend to think that you dislike email, text messages, and telephone calls. So you say:
Not that other modes of communication aren't useful, of course.
clarification,
communication,
discussion 



