Understand this: Zazen is not entertainment,
It is the world that is.
We are generally in the world like children who are placed in front of the TV set to keep their minds entertained.
Zazen, the practice of sitting, is the adult who enters the room and grabs the remote control. Sometimes he suddenly turns everything off and causes tears and misunderstanding among the kids.
It is also possible that the adult or one of the children changes the programs,
Drops cartoons for fiction, then switches from fiction to documentary and finally comes to turn off the screen.