Lets examine this example. Please be patient with my simple minded ways and plain talk...
You trade an instrument and go long and short at the same time in it. You set up your trades with targets in equal increments.
So lets say were long on EUR/USD and our profit targets are 20 pips. As the long side goes up we are entering and exiting each 20 pips. The short side is accumulating entries temporarily. When it reverses then the opposite will happen. You would need to learn to carry high unrealized P/L. but your profit comes from the boxed in volatility grabbing....
Take a trade size based on a 10 year range of the instrument.
Quote from Quah:
When I say "the outcome is uncertain" - I mean that "making a profit is uncertain".
How that applies to direction, I'm not sure. If you are referring to a system that has no chance of NOT making a profit, then I guess it wouldn't be gambling. But, IMO, if there is any chance of not making a profit, then it is gambling.