Are you smoking something? How on earth do you get a +expectancy without proper management? How do you think you get the edge in the first place?Discipline and management first and profits will follow.
Positive expe
Rubbish. You can't manage your way to "edge". It doesn't matter what your management strategy is, if there is no edge to begin with, then this is NO edge. Period.
Some do manage risk in a naturally conservative way without defining in their mind the difference between their expectation on a bet and their bet/position size. It is possible, but...
With many pros: edge, variance and risk management are often thought of separately and weaved together. I suspect that ultimately, for many, this is a better way to view this.
Also, positive expectation is a statistical term with a precise meaning. Some try to stay within standard meanings of terms.
Simple Example:
If I had a coin that came up heads 60 percent of the time, how much should I bet?
Math guys would look at their edge and the variance before deciding how much to bet.
Two real life examples:
1. I knew I had an edge on the Mayweather fight, so how much should I bet was an important thought.
Well.. some people would consider my estimated winning chances and the payout to be helpful information.
BUT, yes, I have known naturally conservative old time gamblers and traders who made it.. but it seemed harder for them to adapt and perhaps they could have done even better (?)
2. Long Term Capital truly had positive expectation on most of their bets and they had overall positive expectation, but they managed to overbet their roll, which amazed many as they collectively had IQ's above MENSA and a lot of trading experience.
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Notes and thoughts:
1. Quant firms break things down. Firms such as Sesqhanna teach their traders to break things down into edge and variance.
But risk is taken in a more conservative way than the formulas dictate, for obvious reasons.
2. I never personally met a professional trader or gambler who said they could make a living on trades/bets where they has a disadvantage on their bets, not that this is what you are doing.
If a coin was biased 60 percent for heads, they would not feel they could make a living betting on tails.
If the coin was 50/50 they would not think they could make a living in the long run.
3. Folksy saying not to take too literally:
There are old gamblers/traders and there are bold gamblers/traders but there are no successful old and bold gamblers/traders.