Often some trading models are very accurate for a period of time, so they are excited to use them, but later they are inaccurate when they enlarge their bets, and the high winning rate turns into a high failure rate. Even if the backtest has been successful many times in a row, it is often wrong at the beginning. When you use it, you stop using it. When you stop using it for a period of time until you almost forget it, it suddenly appears again. This is the rotation of the market cycle.

The market is always switching between different rhythms, different memories, and different programs. We never know which one will be the most popular tomorrow, or which path is possible now? In other words, in "human terms", you never know whether this wave is the beginning of a rising wave or just a rebound of a falling wave.