The forex market oscillates between certain range within a week, generally following downtrend or uptrend over a longer period like in monthwise context.Anybody dealing in forex knows that 10 % profit over a single transaction is not a big deal, using mathematical models one can have literally be never in loss .But there is risk in each and every future event(Heisenberg 's principle) -events like some calamity or economic collapse, so, to gaurantee 10% returns I will use my BTC reserve or the previous accumulated profits ( incase of loss ) and the maximum investment will be kept limited to minimise greater risk of loss .Trust is thing which is very hard to get ,but being myself and others here involved in bitcoin for a long perod of time,so please give me a little trust , I will try to make to it more concrete .