      Think statistically about trading for a moment. If you flip a coin andbet $100 on every toss, you will break even over time. If it costs you $10to flip the coin each time, you will obviously be a net loser of capital.In terms of trading, if you make $100 half of the time and lose $100 halfof the time, you will be a net loser of capital, given the cost ofcommissions. Therefore, you will need to either win more times than youlose, or make more money on the winning trades than you lose on the losingtrades. In truth, most short-term traders have less than a 50/50 success toloss ratio. Some of the better traders that I know make money on only 30percent of their trades, but when they make money, they make a lot of it.