Today I had my mind on people and motivation. After the last text I tried to form a couple of more discriptive, but in no way scientifically researched, analogies. What kind of people are there amongst us? Here comes:
These kind of people are the single-minded locomotives of the human universe. They do their thing steadily, formidably and they will always get there eventually (unless they're owned by VR). They might not be the fastest ones to achieve it, but they have a distinct sense of the direction - they really know how to get there. Of course, in itself this is a blessing and a curse. Someone with the tracks laid already can hardly change the direction very fast. A new destination will require new rails - and that means several rounds of complaints from the little inhabitants called your brain cells.
These people have usually more key areas of interest, between which they alternate periodically. (I'm thinking Foucault pendulum here, so more than two equilibria positions are allowed). Their life may be one consisting of projects, or at least something in the way of those. Characteristically, once they delve deeper into something they really get into it, but after a certain period of time the interest starts to wane, until it's time to change the direction again. I feel like a pendulum guy, personally.
These people really can motor. They're the fastest ones around. Before you've even formulated your approach regarding a problem they've already halfway to the library with 27 different solutions running in their heads. As a cheetah of intellect, however, jets usually need more time to rest and gather energy after a completed quest. I mean, have you ever seen trains idling for days? (again, excluding VR trains) Another problem for the jets can be either speed limits (working in groups where not everyone wants do dedicate their life to the project) or alternatively too long distances, causing them to run out of steam (projects with too distant goals and too long a span).
Quite obviously, this is hardly a comprehensive analysis of anyone's personality. But it might make a useful tool, help you think about yourself from a new perspective or just give you a few laughs. And every one of those reactions is a good one.