After the trader removes the "not good strategy", there will be some good strategies left behind with the culling strategy. Traders need to make trade-offs to settle their relatively good strategies to meet their investment requirements. However, many traders are not satisfied with this and hope to find a better or even "perfect" trading strategy.
But as discussed at the beginning of this chapter (see 3.1.1), no single strategy is flawless, because a flawless strategy can make assets expand and produce amazing results. This phenomenon has not been seen in the real trading environment.
A strategy of pursuing perfection can cause damage to traders. This sentence sounds a bit unreasonable, but it is true because:
- When a trader develops a so-called "perfect" strategy, the strategy is revisited in the event of an undesirable effect in the process of testing with historical data of selectable multiple samples. Once the strategy is revised, it needs to be re-verified. Repeating this way may result in a huge amount of work and consume a lot of time and effort of the trader.
- Once a "perfect" strategy has been put into practice through the test of multiple sample historical data, and the subsequent reality is very likely to make the strategy invalid at some point in time, the trader needs to be revised. Strategy and test to meet the "perfect" needs. This may once again create a massive amount of work, continuing to consume a lot of time and effort on the trader.
Therefore, once a trader has worked hard to develop a "perfect" strategy, this means that the trader always reminds himself that he may spend the same hard time modifying the strategy at any time in the future.
If a trader changes the demanding requirements of the “strategy” and can accept the “strategy” to some extent, then the tested strategy will not let the trader be in a state of tension to modify the strategy.
This is what this article calls a "relatively good" strategy.
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