An advantage of text is that you can broadcast not to multiple people. My friends have a Whatsapp group where we coordinate or ask general questions. Also you

An advantage of text is that you can broadcast not to multiple people. My friends have a Whatsapp group where we coordinate or ask general questions. Also you can send audio recordings in a text message. I think I once read on hn that in some crazy asian country that is the main method of communication: they don't text, they don't call, they send each other voice mails.