These days Its quite rare to find people who read book at the subway.
When I was at highschool, smartphone was released at that time people prefer to use traditional base text app in phone after some years later.
All of people are using internet base messengers.
Even i dont have group chat with elementary~ highschool.
But, these days kids have lots of group chat with their class.
I think we cant swim against the tide.
24h internet and social media life.

and good words for know yourself.
That reminds me some people at blockchain.