Well I'm pretty sure you asked if I could go back in time. Simulators or backtesting is kinda like that. What's funny is you don't think the markets are manipulated to trap traders on the wrong side of a market before some news events. Easy to spot if you know what your looking for...What has simulators got to do with your attempt to explain your statement that "big player's or banks already know the news outcomes"? There are multitudes of reason to position ahead of a risk event but that doesn't mean that they "know the news outcome".