It's yet another example of what I talk about in my book: how apparent safety is often more dangerous than well-managed risk. Our instincts to protect ourselves and our children are laudable. But they are also often wrong. It's time for a serious rethink of how we manage this threat -- and many other, formerly normal risks from which we are shielding children, to their detriment.
Considering McArdle also wants you to teach your children to rush a gunman rather than regulate guns, it might not be wise to take her advice regarding your children. She's just a little bit cavalier with their lives. Although I doubt she would be as careless with her own child's life. That hypothetical child would have probably had an underpaid au pair taking her to the park and The Little Preschool Of Galt's Gulch.