NPR Reports on the Mystery of Rivers Flowing Downstream and Men Leaving the Workforce

Okay, they only consider the latter a mystery, but for those who follow the data both are equally mysterious. The piece was titled "an economic mystery: why are men leaving the workforce?" The piece noted the reduction in the percentage of prime-age men in the workforce from nearly 100 percent in the 1960s to 88.3 percent at present. It then said that no one really knows why there has been this decline.

Actually, it really is not much of a mystery. While the piece wants to attribute it to the...