Corporate types over at Shell have developed a taste for things somewhat deeper than oil wells. The top echelon was recently addressed by a certain Lama Yeshe, a Tibetan monk, whose 80-minute session at the annual Maastricht get-together ran as long as the chief executive's. One of the highlights of Lama Yeshe's wisdom-imparting lecture was the time he spent teaching silent meditation. He recommends an hour a day. 'If they can do that, the quality of work and their profit margin will grow.' But which method should managers use? There's a wide selection, including the 'meditations of contemplation', 'breath counting', 'mantra', 'who am I?' and the 'thousand-petalled lotus'. For managers in hot internet companies, though, the choice is obvious; expect to be hearing a lot about 'meditation of the bubble' this winter.