I like systems also and I agree with you that it would be nice to know what the system is.
That said, I still maintain that many of these systems/angles are backloaded and are onesided meaning that there are counter-trends that
the other side is the play, but the person who is selling the pick uses whatever he chooses to and leaves out the rest because
if he mentioned the counter-trends, the advertising to sell the picks would simply not have the same sizzle.
Also, I don't mean to but cynical, but without knowing what the system is, how do we know there really is as you say 21-0
system to begin with.
Days like yesterday make me wonder!!