How much to make money (interval) depends only on the fluctuation range and the leverage ratio of positions.
As for why there is such a statement, it may be because some varieties encounter risk events and have a large decline in a short period of time.
When it rises, it rises slowly, and when it falls, it is very violent. Especially in some cases, when falling down the stairs, the diving style is very violent and impressive.
It may be because most people are used to thinking more, and it is easier to find reasons to support themselves. When there is a decline, panic is more likely to appear and spread faster.
So it gives people the illusion that short money is quick. People who make money by shorting make people feel more fierce.
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