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GJ--
Six months ago, I would have definitely agreed with your last post. But, my thinking has changed dramatically since then. Here are my thoughts now, several groundbreaking books and five trading systems later.
Success rate, or system reliability is really not as important to the success of the system as it is to the trader's psychology. It can be very hard to trade a system that fails 90% of the time, but that doesn't mean it's a poor system.
My first strong attempts at system development attempted to take just a piece of the move, because most moves went at least X pips. I wasn't going to give those X pips back, because no one ever went broke making a profit. The more I tested the system, the more wrong I found I was. I'm sure it can be done, but creating a positive-expectancy system that cuts profit runs would be difficult to do. Even if you were successful, I am skeptical that you would be able to exceed the expectancy of a system that allows profits to run.
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