Quote from TenTwenty:
Shouldn't your next trade have nothing to do with your previous trade, whether it was a gain or a loss?
Shouldn't you increase your risk only if the situation demands it rather than trying to compensate for previous losses which are independent of the future?
In order to be profitable, gains must outwiegh losses. Therefore, preceding losses must be taken into consideration. Consideration of preceeding P/L is very important.
Furthermore, gains should also be accumulated at a faster rate than losses. In this regard, because we can not control the speed of market movement, we have to adjust size of trade to determine speed of P/L. In order to off-set a loss faster, larger risk must be taken on. Of course, the key here is to not initialy take on too much risk, and when increasig risk, increase it at a reasonable rate.