But you then pick out a specific socioeconomic system as "probably the best" without specifying those circumstances - unless you mean "long term survival" to be those circumstances? If so, survival of what? Village/tribe systems? The problem seems circular, put this way. I'd even suggest that circularity is the root of the uncertainty in your "probably."
I hope I don't sound like I'm picking a fight; my reaction is just what springs to mind, and you're touching on a topic I find important.