I have two million dollar ideas: one is called the study muzzle and the other is called the study funnel.  I will say, “It’s time to take out your study muzzles and funnels,” and, “put  your study muzzles and study funnels on.” And then all my students will put a muzzle on their little snouts and a funnel around their heads so they can concentrate.

If I didn’t suspect they would like humming and mumbling through the muzzle and jerking their necks around to see each other’s faces, and hitting each other’s funnels with their funnels, these would be really good ideas and products that would make them concentrate and make me rich.