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I believe you must be an expert in trading, right?
It is not so predictable for me. It's super hard to predict. My predictions are usually wrong :D

Just experience, nothing else.

It's predictable in the sense of good probabilities.

Here's an example: If something goes up in value, it is likely to then retrace 50% back down of the upward movement; If something goes down in value, it is likely to then retrace 50% back up up of the downward movement! Hopefully I'll write some more posts 😀