The notion that trading cannot be guaranteed is a misconception often held by those lacking a proven edge. Without a positive minimum specific profitability guarantee, besides a full return of the initial investment, there should be no license for a trading system. Statistical validation of trading setups is entirely feasible, allowing for the prediction of future gains with a reasonable confidence interval. Just as a car manufacturer guarantees that your wheels will rotate when you press the accelerator, trading systems should also provide guarantees based on validated metrics. It's unacceptable for a trading system to place the burden of risk solely on the investor if it fails to perform.