Here's another one

Took the Enneagram Test that MF recommended. And let me assure you this one is as close as it gets, in terms of accuracy.

Enneagram Test Results Type 1 Perfectionism 69% Type 2 Helpfulness 51% Type 3 Image Focus 35% Type 4 Hypersensitivity 20% Type 5 Detachment 78% Type 6 Anxiety 68% Type 7 Adventurousness 23% Type 8 Aggressiveness 37% Type 9 Calmness 65% Your main type is 5 Your variant is social

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I found an explanation of type 5s :

"5. The thinker. The withdrawn power-seeker
"Nothing interferes with my concentration. You could put on an orgy in my office and I wouldn't look up. Well, maybe once." - Isaac Asimov
5s identify more strongly with their thoughts than any other personality. To others, 5s are known for their sharp intellect, strong need for independence and privacy, and intensity of their cerebral interests. 5s are intensely interested in explaining the world and predicting what it will do next.

This derives partly from scientific curiosity, and partly because they sense much of the world to be hostile and unreliable, requiring that they use their minds to defend against its threats. The 5 is the
prototypical scientist "type", although not all 5s are scientists, and not all scientists are 5s.

Whatever their profession, 5s bring a strong desire to investigate, observe, and understand an issue deeply and provocatively. 5s are unusually independent and self-motivated, with a strong need for privacy, and others sometimes have no idea what the five is working on until it is finished and unveiled. Some of the greatest minds in history were fives whose ideas challenged the conventional wisdom, forcing those around them to think differently.

Unfortunately, the average 5's independence often leads to social isolation, and the 5's need for intellectual control can also be off-putting to others. Many 5s develop a cynical worldview, which sharpens their perceptions but also intensifies their isolation. Their independence makes their
thinking very idiosyncratic, leading to either brilliance or weirdness, or both.

As with all the types, healthy 5s can transcend this pitfall of their personality, and 5s that do make this effort can become as brilliant in their social understanding as in anything else.

Famous 5s: William Rhenquist, Stephen Hawking, Francis Crick, Helen Keller, Wittgenstein, Arthur C. Clarke
Famous 5w4s: Sigmund Freud, Nikola Tesla
Famous 5w6s: Charles Darwin,
Frederich Nietzsche, David Lynch, Isaac Newton "

Most interesting! Go here to read about all the 9 types.