What's interesting to consider is whether the results would differ: - if one bought the book and built the trading algorithms against historical data as progra

What's interesting to consider is whether the results would differ: - if one bought the book and built the trading algorithms against historical data as programming exercise, - then tried them in a real-world context. Restated: is the math really that magical, or is it a question of scale/volume, or is the fairness of the market a mirage?