Quote from JoshDance:
Can you give an example of a "profitable system" (could just be made up, it doesn't have to be real)? I dislike the word "system" because to me it seems to imply something that can be programmed, and IMO all purely mechanical systems are doomed to failure sooner or later.
"System" meaning set of quantifiable rules that are followed.
Discretionary trading is not really a "system."
If you cannot look back and say "oh, I did this wrong because I did not follow rule number whatever and that's why I lost money," then you do not have a system.
People who trade discretionarily tend to backward rationalize things so they can feel like they broke a rule rather than admitting that they don't have a profitable system. Like they'll see an inverted head and shoulders forming and think, at the time, "ok, time to go long" but then it turns out it wasn't an IHS, it was just L, LH, LL, and continued going lower, and then afterward they'll be like "oh well I broke my rule which is never go long during LLs and LHs" or whatever.
What they mean to say is "I have no idea wtf I am doing."
I love the title of this thread, because it aptly describes what we are doing: taking an approach to trading, not pushing a button and running a "system." I've seen traders use approaches and methodologies that work, but I've never once seen a "system" that actually works.
"Gurus" will hide under this guise, and then make excuse after excuse when their "system" doesn't work for their paying students.
A "system" will support all its entries, even if they were wrong:
"Conditions x, y, and z were met. Those are the conditions to go long," and then you go long.
If that trade loses money, you still defend it, because you were following your system. You don't start making up crap or changing rules to pass it off an as exception.
Of course, the vast majority of "systems" don't work. Just look at this forum and why everyone is pissed off that going long on bullish MACD crossovers isn't working.
I believe that discipline to follow a system is not the main reason people lose money. The main reason is because they don't have a profitable system. Following its rules or not is irrelevant.
It's like if you're trying to win the Indy in a Honda Civic. It doesn't matter if you're an awesome driver or a terrible driver; you're still going to lose.