SELF-DESTRUCTING? The proprietor at the Center for College Affordability and Productivity appears to be instinctively autistic at quantitative analysis.

I am not so sure. Why, for example, has the national personal savings rate fallen dramatically over the past 30 years, precisely the period of sharply rising college costs? Taken by itself, this almost implies a negative relationship between college expenses and personal savings.

In the same way that there is a negative relationship between the size of a Chevrolet tail fin and economic growth.