[Firehouse]

Yes, sorority systems are more stable and that's one of the goals of NPC, Panhellenic, etc. The downside is that the more stable the system the less chance there is of any real upward movement on the part of an ambitious sorority. The men are much more entrepreneural and willing to go around the rules. I hope I don't catch hell for this, but it appears that - generally - when women confront chaos they seek to impose order. When men confront chaos, they seek the advantage of opportunity.