What it says about the author of NOfP:
INTJ - The ScientistsThe last is dead wrong--concentration isn't my strong suit, and I hate working alone.
The long-range thinking and individualistic type. They are especially good at looking at almost anything and figuring out a way of improving it - often with a highly creative and imaginative touch. They are intellectually curious and daring, but might be physically hesitant to try new things.
The Scientists enjoy theoretical work that allows them to use their strong minds and bold creativity. Since they tend to be so abstract and theoretical in their communication they often have a problem communicating their visions to other people and need to learn patience and use concrete examples. Since they are extremely good at concentrating they often have no trouble working alone.
BTW, GenderAnalyzer says I'm 84 % female.
(via Greg Mankiw, normblog)