In the hypothetical the author likely starts with a simple premise: Price moves because of imbalance . When buyers are more aggressive than sellers, price rises. When sellers panic, price drops. Order flow tools (like Footprint charts, Time & Sales, and Delta) let you see this imbalance as it happens.
By following the "Smart Money" footprints, he stopped getting stopped out by random noise. He learned to enter only when he saw a Liquidity Gap , knowing the price would gravitate there like a magnet. The "PDF" realization Order Flow Trading For Fun And Profit Pdf