The investment transaction in the securities and futures market is a continuous "negative sum game" process, that is, the losing side of the investment transaction not only loses to the profitable side, but also both sides have to pay various fees during the transaction. Therefore, not only the employees who win in the investment industry are supported by the losers, but also the employees in the investment service industry are fundamentally supported by the losers. If the loser wants to support all the investment practitioners, including himself, then the loser must far surpass the winner not only in quantity but also in capital, so as to maintain the continuity and viability of the securities and futures market itself. It can be inferred that the main movement direction of the market must be the most unbearable direction for most investors psychologically, and it must also be the most unexpected direction for most investors. The market will use all methods to prove that most investors and most funds are wrong most of the time, and one of the prerequisites for the survival of the market itself is the mistake of most investment decisions. This "all methods" is the so-called "invisible hand" in western economic theory and the so-called "super main force" in China stock market.

Because any investment profit comes from the positive movement of the price along the investment direction, any investment loss comes from the reverse movement of the price along the investment direction, investors will naturally pay most attention to the direction of the price movement, and judging the price trend will naturally become the primary homework for investors' analysis. At present, most books on investment skills are mainly based on various analytical methods, which also strengthen investors' awareness of "direction" and "trend" to a considerable extent. Because most people, funds and methods involved in the market represent the inherent requirements of the wrong market, most people's habitual behavior of focusing on confirming the direction or trend is bound to be inefficient. Further inferences are as follows:

Inference 1: The market will try its best to prove the popular view wrong.

Inference 2: The market will do everything possible to prove that the popular operation method is wrong.

Inference 3: The popular application of basic analysis methods developed from the traditional economic theory based on the basic principle of supply and demand is inefficient in the securities and futures market.

Inference 4: The popular application of traditional technical analysis methods is inefficient in the securities and futures market.