Anyone who has been round the forex market for at least two minutes knows that you always need to test currency exchange systems before you go live with them.
So why does Forex work for some people and not others? Many folks actually find this quite hard to believe. They imagine there is one perfect system out there that fits everybody and could make us all into millionaires if only we knew how to get a hold of it. But that idea is a total fantasy.
There are several reasons why a system might suit some people and not others. It could involve some talent like interpreting a complex mix of indicators that some people will handle with no trouble while others cannot get their heads around it irrespective of how hard they try.
So you must test and you can do this in more than one way.