Quote Originally Posted by MisterNi View Post
True, but that's not the full story. There are several empirical studies that've linked intertype relationships among MBTI types as well as Enneagram types. Socionics has relations on a theoretical level but this really calls into question whether you believe in empirical studies vs theoretical studies. It's lunchtime at work right now so I don't have time to find the links, but I'll find them and post them when I get home.
As promised:

http://www.personalitydesk.com/story...rsonality-type
http://www.davidmarkley.com/personality/mating.htm