I think the idea is that every person has to live for his or her own life and then make the choice to share it with other people. Maybe that is what makes people "participate.

“Anyway, Patrick started driving really fast, and just before we got to the tunn…”

“How about your favorite book?" "This Side of Paradise by From. Scott Fitzgerald…”

“Once on a yellow piece of paper with green lines he wrote a poemAnd he called i…”

“That nice feeling when you look in the mirror, and your hair's right for the fi…”