The certainty we need to understand is, in fact, a kind of "causal necessity". If you persist long-term: entering the market at the right moment when a major trend starts (cause) + strictly implementing determined risk control (cause) + pursuing a high reward-to-risk ratio with logical support (cause), then long-term stable profits (effect) become a certainty. The problem for many traders is that they try to find 100% certainty in a "single trade", which is mathematically and logically impossible. The strength of professional traders lies in their ability to construct "global certainty" through a rigorous logical framework, even in the face of "single uncertainties". The market is imprecise, and so is life. We cannot predict certain price points, just as we cannot foresee every encounter in the future. But we can have certain values, a certain logical framework, and a certain risk baseline. Strike decisively in the "fuzzy precision" and wait patiently in the "certain logic".