Is the failed screen trader a red herring? Does it really matter?
To use a sports analogy, the people who coach athletes are rarely as talented as the athletes.
How about the guys teaching the Doctors and Lawyers? If they were any good why wouldn't they be out in the real world doctoring and lawyering making the big bucks.
There is a possibility that a failed trader will know the mistakes he is making and not have the discipline to correct them. That doesnât mean that he wonât be capable of teaching others.
Those you can, do; those who canât teach.
It's a good statement/analogy that you provide and I used to think the same way because I wanted to believe them and never questioned it to the detail because it makes sense first hand (they make the same analogies)
HOWEVER
The analogy is MISLEADING and is therefore false
Why?
When you become a doctor, a professor or multiple professors teach you the "know how" of medicine in college and then test you on this knowledge. The professors themselves ARE NOT doctors.
As a doctor you have to know this whole book, lets say, 10,200 page book. These professors help you learn this material because they also KNOW this material and SPECIALIZE in teaching it, since they KNOW IT.
When you get into medical school and when you become an intern you will work in the hospital with another person for the sake of working with patients and IDENTIFYING their conditions that you have all learned from the book. Another person, probably a DOCTOR, someone who also SPECIALIZES in identifying patients' conditions will be there to Test you on that specific knowledge.
In sports, or lets say becoming a NAVY SEAL
There will be a division of people who ARE NOT navy seals who will teach you how to conduct operations underwater. These people SPECIALIZE in conducting operations underwater and SPECIALIZE in teaching it because they KNOW how it's done.
Then you will go to the shooting range were a group of people who ARE NOT navy seals will teach you about every weapon. Theses group of people SPECIALIZE in Knowing everything about these weapons and they can in teaching it because they KNOW them.
Then you will go to another shooting range were they will teach you how to shoot weapons. These group of people ARE NOT navy seals. These people ARE PROFESSIONALS/specialize in shooting weapons, Hence, they teach you this.
Once you know and pass everything in each category you will be working with NAVY SEALS in simulated missions (crackhouse shooting training) and then be on a Navy Seal team
--------------------------COMPARISON-------------------------------------
In trading if you have to learn a book that is 150 pages long, EDDIE who is a FAILED SCREEN TRADER and is NOT a profitable trader can teach you this material if he knows it himself. If he KNOWS/SPECIALIZES in this material he can teach you it because he knows it.
Some one else, John, SPECIALIZES in identifying the patterns that you learned in the 120 page book (he knows how to identify these patterns on the chart).
Since he SPECIALIZES in it and KNOWS how to do it, he will teach it to you and test you on it. However he is NOT a Profitable trader and he is a FAILED SCREEN TRADER as well.
All of THIS knowledge you can learn by yourself ( a 5th grader can do it) But WITH THIS knowledge ALONE, CAN you make money consistently? If you program a system to trade these patterns from the book with different R:R's you will notice that ALL of them are 50% at best and break-even - commissions.
You need a SPECIALIST or PROFESSIONAL TRADER who specializes in making it work for him by applying this knowledge to make profit consistently.
A person who CANNOT make profit consistently CANNOT teach you how to make profit consistently. THESE SPECIALISTS need to SPECIALIZE in this IN ORDER to TEACH you about it.
They are basically PROFITABLE TRADERS in this situation, and they ARE NOT FAILED SCREEN TRADERS because a FAILED SCREEN TRADER does not SPECIALIZE in PROFITABLE TRADING hence, he cannot teach you. He can only give you irrelevant bogus, and maybe you will learn by yourself (1%chance)
With a real pro maybe 40% chance you will lean? 60%? greater than 1% though. Not sure you would want a doctor to to be trained in these conditions , or a Navy Seal trained by a garbage man or even a knowledgeable soldier.
Some one who doesn't know how to cook cannot teach you how to cook. He can teach you how to blow up the kitchen though.
Someone who does not KNOW how to fight cannot teach you how to fight.
But someone who KNOWS RECIPES, CAN teach you different recipes that can come in handy for you.
Someone who KNOWS how to punch, CAN teach you how to punch with your hand and fist. But you will get destroyed in the octagon. You need a trainer who will give you some sparring practice where you will learn from experience and not from the trainer himself in THAT situation.
IDENTIFY and detail what you are COMPARING what WITH in order to use it as supporting evidence. It is very difficult to give accurate analogies they need to be targeted specifically and ACCURATELY and not in a MISLEADING way like a politician.