picture in my mind

"Now, if we look at Myers's type descriptions, people are either more observant than introspective, or more introspective than observant. Observers (SPs and SJs) seem more at home when looking after the particulars of everyday living, attending to concrete things -- food, clothing, shelter, transportation -- and to practical matters such as recreation and safety, and are likely to leave the more abstract issues to others. In turn, Introspectors (NTs and NFs) (ME!) tend to be more content when these concrete concerns are handled by someone else and they are left free to consider the more abstract world of ideas.

To put this difference another way, Observers might be called "earthlings" or "terrestrials," concrete, down to earth beings who keep their feet on the ground. These persons see what is in front of them and are usually accurate in catching details. It is said that "they don't miss much." Observers want facts, trust facts, and remember facts, and they want to deal with the facts of a situation as they are, either in the here and now, or as recorded in the past. They focus on what is happening, or what has happened, rather than anticipating what might be, what would happen if, or what might occur in the future.

In contrast, Introspectors might be called "extraterrestrials," abstract beings who live with their head in the clouds, strangers in a strange land who wonder about the curious antics of the earthlings. Absorbed as they often are in their internal world, Introspectors tend to miss a great deal of what's right around them -- current reality is merely a problem to be solved, or a stage of development toward some future ideal. Not only can they miss details, they can also lose track of where they are, and for instance drive right past their highway turn-off. "It's only reality" they sometimes say, to register their relative disinterest in the merely concrete. But more than disinterest, Introspectors can be discontent with reality, even bothered by it, and speculate about possible ways of improving it."

~ http://www.keirsey.com/pumII/ns.html