Quote from trendo:
The longer you are consistently profitable, the more likely you were taught a method that made room for realistic fills. So you either did your due diligence to determine if the fills were realistic or were just fortunate that you were dealing with an ethical teacher. This all begs the question of why the teacher didn't take any live trades.
What difference does that make to you? The objective was to make you a profitable trader... and you are a profitable trader in this example.
Bottom line: the market doesn't care who does execute, who does not and who cannot. The market rewards for personal performance, only.
Too many failed traders waste their time lamenting about drivel that has no bearing on their failure, and too little time invested on what it takes to make them personally succeed

