This week, wifey issued Duncan his first-ever standardized tests, in reading and math. He's six, and would have just started the first grade in a conventional school. Results: fifth grade level, in both exams.

They have a chart showing his percentile, for his age. It's so deep into the ninety-ninth percentile that their graphing tool can't even visually represent the precision.

Wifey and I are both in the 120s in terms of IQ; I took a "Mensa" practice exam once, and it told me that I should try for the real thing. But how did we produce Duncan? He's bogglingly beyond either of us at the equivalent age. And it's not just environment.