Realistic, adaptable, and cool-headed, you can sometimes seem socially reserved, appearing distant and unengaged until you suddenly and decisively spring into action with a clear plan for what should be done. Though logical to the bone, you tend to care little for theoretical book knowledge, preferring to engage with the realities of the world directly. Independent and flexible, you tend to follow your own interests rather than allowing yourself to be swayed by the expectations of others (in fact, you most likely think that others tend to be a bit too sensitive). Daring and decisive, and at ease with risk, you tend to be mercilessly clear-sighted in sizing up the challenges that you face and reducing them to essentials. Though you are not one to split hairs over theory, your analytical faculties and powers of observation are sometimes drawn into analyzing how a physical object or piece of machinery works with an in-depth passion and perfectionism that others may perceive as being in contrast with your otherwise relaxed and laid-back demeanor. The way you see it, though, you would not necessarily be so detached towards others if only they would act a little more logically and make more sense.
70% ISTP et 30% INTP.
http://www.celebritytypes.com/test/intp-or-istp.php