ENTP

I'm guessing my personality is ENTP. This website gives the middle two letters of your personality inventory.

According to the test, I am a Rational.

Rationals are very scarce, comprising as little as 5 to 7 percent of the population. But because of their drive to unlock the secrets of nature, and to develop new technologies, they have done much to shape our world.

Oooh, I'm scarce!!

I'm assuming I am an E, which is Extrovert. And the P is Perceptive as opposed to J, which is judgment. This would then describe me as an Inventor, as opposed to a Field marshall, if I was a J.