Differences between Keirsey and MBTI

Differences between Keirsey and MBTI
http://intjforum.com/showthread.php?p=400139#post400139

I think both the Keirsey and Myers-Briggs are a bit limited in the way they deal with the myriads of personalities. Ingenious world systems created by rationals may even be an illusion but especially appealing to the Hawks (INTJ) who make a judgement call before adsorbing the information like an Eagle (INTP). There is a usefulness in prediction of events and writing fiction and I have tested the former with remarkably accurate results. However, it does not work with NPs to a very great extent. Actually, it probably does work but the extreme Perceiving time span is so great and the window of opportunity so small that it is no practical use and a new system would have to be devised to be all encompassing (if that is what you want).
I am really fond of personality type personality profiles as they are not so cruel as social overlay world systems like the [URL="http://www.millon.net/taxonomy/index.htm%22]Millon[/URL] and the obscene psychiatry of the Fraudians.

Addenda:
Jung's typology was popularized in the United States by Myers-Briggs who added a fourth factor -- the judging-perceiving preference which relates to the propensity to stop perception to make a decision. The judging type does this sooner than the perceiving type.
http://www.gesher.org/Myers-Briggs/On%20Type.HTM

I would go further than Myers-Briggs and fully incorporate the Judging-Perception scale as the most important.
e.g.
I use Perception as my major MO in ordinary circumstances (unless I paid for a specific agenda, out of character type, most work involves this). The Guardians (SJ) of their personal interests do not like Dragons (NP) and will not answer the Questor. Nothing changes.

Important reference:

Keirsey Temperament versus Myers-Briggs Types.
What's the difference?

Compared to the difference between astrology, or even other non-Jungian based theories or methods of classifying personality, there isn't much difference at a superficial level. However, there are some major practical differences and a large theoretical difference between the two bodies of work. The first essential difference is that Keirsey describes observed long term behaviorial patterns, Myers often describes what people have in mind. The second essential difference is Myers used a linear four factor model to characterize "invariant" patterns of behavior of the individual throughout their lifetime, whereas Keirsey uses a systems field theory model to characterize these patterns. Lastly, the problems of intelligence and madness, that is, what are they are and how they relate to temperament, was not effectively addressed by Jung or Myers.
To illustrate graphically, the difference between the two bodies of work, one can look at the following simplifications of how the each theory represents the "temperament" and "character" of an individual, although Myers did not explicitly address the notions of temperament and character.
http://users.viawest.net/~keirsey/difference.html