New Delhi, April 28 -- Last Monday, a groggy Bertie was sleepwalking around his office building in search of his caffeine fix. That's when he bumped into an old friend who is the India economist at a foreign brokerage. Many years ago, she and Bertie had worked for the same Wall Street bank, which is how he knew of her diligence with numbers and attention to detail. Unlike many of his buy-side peers, Bertie has never given anyone a hard time about missed forecasts, but the one thing that Bertie is allergic to is bad data. The future is uncertain, but the past shouldn't be. That is why Bertie likes analysts who present solid historical data in easy-to-comprehend formats. Bertie's economist friend met those criteria, so when she offered to r...