The author takes the old D'Alembert system (he doesn't even spell it right)and lists various bet choices in casino games where you can try it. What's remarkable is that he recommends NOT trying many of the variations he suggests in the book. He then goes on to admit that this system, which has been proven over and over to fail (like any other progression), actually doesn't work in a real casino, and then tries to blame casino cheating! That, combined with his religious rantings that have nothing whatever to do with the subject at hand, lead me to seriously question this guy's grip on reality. In fact, one wonders why someone who is so worried about Satan and evil is encouraging gambling in the first place. His "Mathematical Analysis" sections contain neither math nor analysis. Send me your money instead and I'll recommend much, much better books.