Because for all the backtest simulations you runs for all possible permutations of strategies, one thing cannot be mastered… Your psychology.

Once you are confident of your strategy, the moment you get into the market with real money, all your confidence fly out the window ‘coz you have not mastered the psychology part which makes pulling the trigger painful or pulling the trigger too fast..

And then you wondered why ….

I am fully agree with you in the article.

Finally after trading for 6 years, I had developed a system to trade forex and commodities.

Anyone who is interested to know my system can send an email to me at metal.commodity@gmail.com.

My websites:
www.CommoditiesTradingPro.com
Investment-News-Update.blogspot.com
AllAboutOil.blogspot.com
www.ForexandBinary.com