Since Steve Sailer mentioned Moynihan's Law of the Canadian Border, it occurred to me that our readers might not be familiar with it. George Will described it as Moynihan's discovery that "a crucial determinant of the quality of American schools is proximity to the Canadian border. The barb in his jest was this: High cognitive outputs correlate not with high per-pupil expenditures but with a high percentage of two-parent families. "

Economist Bryan Caplan said that "Minnesota's high rankings are largely arithmetic, not causal. Whites have above-average performance, and Minnesota's over 85% white (non-Hispanic), so Minnesota has above-average performance."

Here's Moynihan's original: