Many popular stock-trading rules of thumb and trading systems tested in this book are unreliable. The tales of their effectiveness are myths. The book reveals new scientifically tested stock trading systems that more than double certain investment returns compared to buying and holding certain equities. To illustrate the effectiveness of the new systems and ineffectiveness of the mythical trading systems, the thirty stocks in the Dow Jones Industrial Average (DJIA), twenty-six older exchange traded funds (ETFs) that reflect prices of various U.S. and foreign market indices, and the ten most popular mutual funds are used as examples. Readers of the book learn how to evaluate trading systems and test their own ideas based on scientific methods using free software downloaded from the author's website on the Internet.""Robertson is a worthy guide who can bring difficult concepts to the level of even the casual investor."" Dan Shearer, Editor, Green Valley News (Arizona)