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Why Consistency Beats Prediction

Trading outcomes are uncertain at the individual-trade level. A trader can make a good decision and lose, or make a poor decision and win. Consistency allows the statistical properties of a system to emerge across a large sample. If position sizing, entry criteria, exits, and risk limits change every time the trader feels pressure, historical expectancy becomes less meaningful because the process itself is no longer stable. Consistency does not guarantee profitability. It makes the system measurable.