I’ve never been able to hold a silence in class. There’s lots of talk about how long you can let a question hang in the air--there’s a swagger in these discussions, a sort of teacherly way of one-upping one another. And I’ve heard boasts about a minute or two and stories about those rare masters that can hold the three, four, five minute silence (we can, in this regard, look toward John Cage as having raised the long silence to an artform).