In the classic Ernest Hemingway novel The Sun Also Rises, Scottish war veteran Mike Campbell is asked how he went bankrupt. His answer: "Two ways. Gradually and then suddenly."
This pithy response is in many regards an accurate description of how the World Bank has considered of the use of mobile technologies as part of its support for international development efforts over the past decade. As part of its 'Innovation Days' event this week, the World Bank showcasing new approaches to some long-standing development challenges. Judging by many of the exhibits and discussions going on related to the use of mobile phones, it is clear that what was for a number of years a rather fringe topic of conversation among small pockets of people here -- primarily those working in the ICT sector and on microfinance -- has now exploded into the consciousness of World Bank and other international donor staff working in most sectors.