We assume our seats, listen for the bell and then do nothing. Doing nothing is far more difficult that doing something. Doing nothing is something that takes great practice. You can practice doing something, but eventually, with sufficient practice, you may master that something. You never master doing nothing, for nothing is infinitely broad, something definably narrow. When the bell next rings we arise slowly, bow one to all of the others, and try and figure out something to do. Nothing usually comes to mind.