After many people have formulated a system, they sometimes strictly implement it and sometimes do not strictly implement it. This inconsistent behavior will only ultimately expose themselves to the only advantage of the market - probability, and the destruction will be complete, just like we all know that we continue to toss a coin. In the end, it is 50% heads and 50% tails, but there is a big premise here, that is, the coins you toss must be exactly the same every time, so you know why you have been losing money in the long run.