Before small screens and walkmans, millions of people flew every day in an airplane seat trapped with their own thoughts. For many, it was probably the only time they experienced this.

I actually get comments from other passengers now how I can sit and look out the window for hours without music, movie or book.

In their rooms, they have other venues and probably less fear of negative self-conscious thoughts (too fat, ugly, whatever for the beach).

I wonder how many Hikikomori are in their own thoughts vs escaping into online venues.