Michael Lewis’ new book, “Flash Boys,” relates a real-life techno thriller in which a trader who identifies and ultimately thwarts a scheme deployed by piratical “High Frequency Traders” to squeeze a relatively small amount out of many stock transactions being executed electronically. As our hero’s trade bounced around hyperspace looking for the best price, the HFTs would detect its path, use their speed to get in front of the trade, and buy up the inventory so that the price of our hero’s trade could be dictated.