[Soultrader]

Backtesting is accurate but you need to understand that market conditions change all the time. If you are testing a system, you need to make tweaks or changes to it with the changing market environment.

Also once you have real money on the line, all the backtesting in the world is not going to help you if you can not follow your trading plan/system.

Give a reckless trader a good system and I have my money that he will not profit from it.