yup, I believe there are strategies that can provide 100% win if implemented by the rules. eg "swap hunter" at the same time open two-way trading position opposite to one another with the same lot size. select a broker that uses platform trading with 5 decimal price and allow hedging and reverse trading, use the swap account, select pairs that have the lowest spread with a high difference swap. use in the long-term trading... of course you can use 50% or more from your free margin without any risk!