Michael Erard offers a short manifesto on the future of attention. An interesting read as we race to incorporate Twitter, Facebook, etc. into the learning environment.
I imagine a retail sector for cultural products that's organized around the attention span: not around "books" or "music" but around short stories and pop songs in one aisle, poems and arias in the other. In the long store: 5,000 piece jigsaw puzzles, big novels, beer brewing equipment, DVDs of The Wire. Clerks could suggest and build attentional menus. We would develop attentional connoisseurship: the right pairings of the short and long. We would understand, and promote, attentional health.