Running a systematic strategy is just like following any list of instructions, such as a recipe. Many books on trading are like fast food outlets which give you something quick and convenient to eat from a limited menu. However I am going to help you create your own strategies; this is more than just a cookbook, it’s a guide to writing recipes from scratch. Inventing your own system requires extra work upfront, but it is more satisfying and profitable in the long run. To create your own recipes requires an understanding of the science of food chemistry and of different kinds of dishes. Similarly, part one of this book – ‘Theory’ – provides a theoretical basis for why you should run systematic strategies and gives an overview of the trading styles that are available.