Double top and double bottom patterns have essentially no reference value in predicting price trends. The error rate of these patterns is higher than their accuracy rate.
Dow's Chart Pattern Analysis Theorem essentially puts forward two points worthy of serious consideration by investors.
First is the critical attitude toward traditional chart patterns. Although Dow specifically targets double top and double bottom patterns here, this critical attitude can actually be extended to all traditional chart patterns.
Second is Dow's proposal of an evaluation criterion for the practicality of analytical methods - the accuracy/error rate. This viewpoint essentially embodies the probability statistics concept in modern statistics and the risk/reward analysis principle in modern investment decision-making analysis.