The book is basically a series of studies on reoccuring patterns in the stock and commodities markets. Crabel found that volatility is mean-reverting in the speculative markets. Just as night follows day, volatile markets follow quiet markets. There are more than a dozen robust volatility patterns evaluated and explained. The only real weakness I can see is that Crabel used point values instead of percentage values. This was a common mistake of professionals back in the early 1990's. Vou will need to convert these. For example, if the S&P 500 is currently meeting the criteria for one of the low-volatility "set ups" then place a buy stop 2.5 points above the open and a sell stop 2.5 points below the open. If filled set your mechanical stop-loss 1.5 points outside the current days existing range.