Wall Street is gone because its firms did a terrible job assessing the risks of the positions they took. The models these firms used to evaluate risks failed. But having a failed model brings a firm down only if the firm collectively buys into the model. To do that, the firm must be run by people who have a great deal of faith in their models, and a great deal of faith in themselves. That’s where Ivy Leaguers and MBAs come in.

[…]

One recent study found that MBAs acquire an enormous amount of self-confidence during their graduate education. They learn to believe that they are the best and the brightest. This narcissism has a real career impact. Psychologists at Ohio State University studied the behavior of 153 MBA students, who were put in groups of four and asked to orchestrate a large financial transaction on behalf of an imaginary company. The psychologists observed that the students who had the strongest narcissistic traits were most likely to emerge as leaders.

Bloomberg.com Opinion: Harvard Narcissists With MBAs Killed Wall Street.

I’m sure it’s not this simple. However, I’m willing to believe Ohio State has a beef with Harvard…