We often think of finance as a glamorous world, a place where investment bankers amass huge profits in gleaming downtown skyscrapers. There's another side to finance, though-the millions of amateurs who log on to their computers every day to make their own trades. The shocking truth, however, is that less than 2% of these amateur traders make a consistent profit. Why, then, do they do it? In Noise, Alex Preda explores the world of the...