In other words: The notion of the Democratic contest being a dramatic cliffhanger is a game of make-believe.

The real question is why so many people are playing. The answer has more to do with media psychology than with practical politics.

Journalists have become partners with the Clinton campaign in pretending that the contest is closer than it really is. Most coverage breathlessly portrays the race as a down-to-the-wire sprint between two well-matched candidates, one only slightly better situated than the other to win in August at the national convention in Denver.

Avoiding predictions based on polls even before voters cast their ballots is wise policy. But that's not the same as drawing sober and well-grounded conclusions about the current state of a race after millions of voters have registered their preferences.

The antidote to last winter's flawed predictions is not to promote a misleading narrative based on the desired but unlikely story line of one candidate.