This Strategy is quite logical and would be beneficial to traders. The truth is that to be a good trader one needs to be patient and calculative. The market can even seem to be very difficult, despite this tactics. This could be due to excessive dumps which could render ones trading capital in the negative.
Its not easy to become a trader and can give you headaches once you made a wrong decision.
Thats why having a plan and strategy for a worse situation is best.
Diversifying and when to stop loss are necessary to avoid losses.
Yes, by calculating and imagining about the worst scenarios can help you know how to deal with them when they happen. Becoming a trader can be easy, but becoming a GOOD trader is a hard thing to achieve. A good trader should know that there's no concrete plan for trading, but they have to deal with the situation in a flexible way!