It contrasts the foreign policy mistakes and troubles of our three youngest post-war presidents -- Kennedy, Carter and Clinton -- to the successes of the older, more experienced Truman, Reagan and Eisenhower.
Sometimes, intelligence and a good education isn't enough. After all, Kennedy graduated from Harvard; Carter from the Naval Academy, and Clinton from Georgetown and Yale. Truman didn't go to college, while Reagan attended Eureka College.
Lots of Ivy Leaguers either don't realize it or won't admit it, but there's a lot of learning that goes on simply through the course of living.