Basement for a good strategy!

 

Hi, I have been reading forum this morning and got interesting idea in my mind. There are so many strategies and EA, some of them are good, some off them are not very good.

The idea is simple and i can bet that somebody already had it but...

There are four strategies with 50% win rate. We need strategies that work on the same time period and use different instruments to make a forecast. Chance that all this systems will fail together is 0.5*0.5*0.5*0.5 = 0,0625 it means that we will win in 100%-6,25%= 93.75%

Now what will we have if we take ten, fifteen systems. Yes we will have only couple trader per month but chance to win will be very high.