Poor Sub-editing on Newsweek?

Anna Quindlen writes a column in Newsweek (HERE) which has the heading:

‘Endless Summer’ and the sub-heading:

In the future, all presidential candidates should be sent to a secure, undisclosed location with lemonade and some Adam Smith’

Comment
The actual article apart from the sub-heading does not mention Adam Smith again in it, so we don’t know exactly what the significance is of Cain and Obama drinking lemonade and (reading?) Adam Smith at the ‘undisclosed location’.

How did this get past the Newsweek subs?