content: Despite the advertising, I would say that this book is of little or no use to all but the beginning investor who wants a very easy to manage entry/exit system. I could replicate the "extensive historical research" that these "prominent authors" have performed for their systems in less than a few days and I'm no expert.There are more pages of text devoted to the history of Fidelity and to an overview and explanation of the Select Funds (the only useful chapter in the book for me) than to the 3 "powerful mutual fund models". The "computer programs" included on disk are nothing more than incredibly simple spreadsheet templates.I'm not sure if the authors are bull-market opportunists or just naive, but their book was/is a great disappointment to me.