Board Thread:General Discussion/@comment-7713314-20130610054302/@comment-7472785-20130611060011

That's where I was driving at - the old Greeks were keen observers and wise (well, some of them - they had their share of politicians...). These fopur basic types  are what you have, respectively need, in any balanced group dynamic.

If you do have an over-weight of one type in a group, it's either explosive or non-dynamic at all.