Anybody who has been round the currency market for over two minutes knows that you always have to test currency exchange systems before you go live with them. Even if the system comes with guarantees, even if you got it from a top trader who makes millions with it, you’ve got to know that it’ll work for you. They imagine there’s one perfect system out there that fits everybody and could make us all into millionaires if only we knew how it’s possible to get a hold of it. But that idea is a total fantasy. It may be to do with risk : the system could involve going to a quantity of risk which would be way outside some peoples’s comfort sections, leading them to either subvert the system or make mistakes because of the level of stress.
So you should test and you can do this in more than one way. The best choice is to perform at least two sorts of testing which you can do at the same time.