The inefficient market theory is based on Soros' philosophical research. He believes that human cognition is not perfect and that all perceptions are flawed or distorted.
A common weakness of small and medium-sized retail investors is that they are able to hold to the bottom in bear markets but not to the top in bull markets. For example, in the previous bear market, a large proportion of stockholders got to a low of 998 points from a high of 2245 points.
Richard Schabaker (1902-1938) -- the father of capital market technical analysis!
He was the first to classify the forms of general charts, research and create the famous "reversion and persistence" theory, "split" theory and "support and resistance" theory, and stereotype the use of trend lines and fully emphasize the importance of support and resistance levels. (The predecessor of the "box" theory)