I tell you something else. When I first heard about MBTI and started to type myself I had quite a difficulty figuring out if I was an INTP or an ENTP. While definitely not all the time I do have a strong need to be around other people a lot of the time. Doesn't really matter who, where or what, but half a day is about the longest time I can go for without feeling lonely. On the other hand I do very much need my own space. I need peace and quiet to organize my thoughts and come up with grand theories of live. Even when I'm thinking I sometimes don't really mind people in the room. I often go for walks down-town through the crowds just to get my thoughts organised.
The main reason I'd say I'm an Introvert instead of an extrovert is because it comes out of all my tests, and the fact that my Ti is definitely my primary function. I see myself as a INTP with a relatively large amount of Fe, maybe even more than Si. I don't know if there's a theory on it already, but self-examinating I reckon my cognitive functions would be Ti>Se>Fe>Si
I didn't until recently. Somebody once made a thread I believe was called "How to loose your mind". The article posted in there tried to learn people to observe their emotions rather then participate blindly. If you observe them first you still have the choice of participating afterwards. I already did this before I read the article, but it did get me thinking that this was a genuine theory that could be evolved into a skill to learn. Later, when I was actually looking up how XTC works it dawned me that XTC is a chemical bliss, but not only the drug is chemical, it causes a chemical proses in the brain that IS the happy emotion. Taking drugs is not faking an emotion, it is a stimulus to actually be happy. The neurotransmitters are the one and only cause of the feeling. After realizing this my Ti kicked in again and I started thinking about the implications of this finding, including the one you read here.