Quote from dbphoenix:
and the proposition that they can win by having a 30% winrate sounds pretty good.
The only way to win with a low winning percentage is to trade many, MANY non-correlated financial instruments at the same time.
That's how the famous Turtles won millions in the Futures market.
For example if you trade 20 different commodities, you will ALWAYS catch a mega trend in a couple of commodities (coffee and heating oil for example) in any given year, with a simple moving average or a breakout system.
In other words the big winners will allow you to psychologically stay in the game.