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Though, "5" was a close second: Fives are basically at some level estranged from the rest of the world which forces them to build there own unique world perspective. They like to analyze things and make sense of them (that is their anchor), this makes them great inventors and philosphoers. The immense inner world of fives can cause them to lose touch or interest in reality.
Guess that makes me an empathic philosopher. Hmm, I think I like that a lot.