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2. To profit, we must be net long while price is rising, and/or net short while price is falling, often enough to overcome costs (disperse swap). This applies to a variety of methods, conventional or otherwise, without doubt, constantly. As long as we are accomplishing this, our account fairness (that is the sum of realized P/L from formerly closed positions, plus unrealized P/L from currently open positions) will rise; otherwise it will fall.
3. As long as our account fairness continues to grow overall, we might assume that we have an edge. To achieve this, we need to time our orders (i.e. correct our web position) accurately enough about market reversals, on balance, to be net long while price is rising, and internet short while it is falling. Here is the bottom line no matter if we are (in conventional terms) entering, exiting, scaling in, scaling out, realizing a profit, realizing a loss.
4. The result of any 1 trade is insignificant (if we are hedging, or scaling in/out, together with positions offsetting each other, the concept of a person trade is effectively meaningless, anyhow ). It is the overall effect on account fairness, i.e. internet P/L, that is the bottom line.