I think the basic supposition is whether a group of traders can come up with something more successful than the most successful trader working on his own already has come up with. If the answer is no, then that most successful trader will have no incentive in divulging his method to the collective, will he? And basically, to arrive at that same method as the most successful trader has already arrived at on his own, would be the goal of the collective in that case.
The question also comes up, whether other funds have not in fact already tried the experiment, by trying to hire the most successful traders to work on their team. So, what kind of Edge have the most successful funds managed to arrive at? And is it possible to set better criteria than the ones set by funds when they hire and work together with their members, to arrive at an edge over even the most successful funds?
Perhaps in coming to understand what is an adge, we need to find an equal understanding of what is not an edge, which things may be presented as possible edges but in fact be as likely to hinder success.
Personally, I prefer simplicity. I think simplicity is itself an edge. Too much complication, too much technical jargon and complicated mathematics, and I quickly tune it out.
Of course, that's me. Perhaps more complication is an edge, and my aversion to complication is my hinderance. I tend to think not, though.
I don't mind sharing my methods publicly. Of course, that may be viewed as an indication of the lack of worth of anything I think I have to share. Could be. I don't feel any need for secrecy, I don't feel there's any threat to me if other people know the way I trade. I have nothing to hide, maybe because I have nothing worth hiding. But maybe it just doesn't matter if others know or not.
And perhaps that's an edge: to come up with a system that you don't have to worry about hiding, because there is no threat in having it known by others.