Though we aren't likely to return to an agricultural life or to stop feeding our children well and sending them to school, the very flexibility of the developing brain points to solutions.
As I told the young women at the Elizabeth Garrett Anderson School in London during our recent trip, I told them there was nothing in my life that would suggest that I would become First Lady.
"No amount of money can compensate for the school district's deliberate failure to provide an appropriate education at a crucial point in our son's life, " she says.