Islands of Profit in a Sea of Red InkBy: Jonathan L. S. Byrnes Top companies around the world turn to MIT's Jonathan Byrnes to figure out where the profit is. Using his systematic process for analyzing profitability, they can quickly determine which parts of the business are worth expanding and which are just a drain on resources. Then, using Byrnes's "profit levers," they can turn unprofitable business into good business and good business into great business. We now live in the Age of