> If you look at history, the biggest changes that allow people more free time to spend with their children or otherwise, are technological ones. There's also

> If you look at history, the biggest changes that allow people more free time to spend with their children or otherwise, are technological ones. There's also the 40-hour, 5-day workweek; the end of child labor, parental leave - those developments, and more like them, led to more time with children than the mechanical loom. In fact, as technology has improved, it's possible that the proportion of children with a parent devoted full-time to them has decreased (because now families need two incomes).