“That actually sounds more or less accurate,” I said.

“Of course it’s accurate,” he said. “Don’t get me wrong: the guys from the lower third of the class who went to Wall Street had a lot of nice qualities. Most of them were pleasant enough. They made a good impression. And now we realize that by the standards that came later, they weren’t really greedy. They just wanted a nice house in Greenwich and maybe a sailboat. A lot of them were from families that had always been on Wall Street, so they were accustomed to nice houses in Greenwich. They didn’t feel the need to leverage the entire business so they could make the sort of money that easily supports the second oceangoing yacht.”

“So what happened?”

“I told you what happened. Smart guys started going to Wall Street.”

“Why?”

“I thought you’d never ask,” he said, making a practiced gesture with his eyebrows that caused the bartender to get started mixing another martini.

“Two things happened. One is that the amount of money that could be made on Wall Street with hedge fund and private equity operations became just mind-blowing. At the same time, college was getting so expensive that people from reasonably prosperous families were graduating with huge debts. So even the smart guys went to Wall Street, maybe telling themselves that in a few years they’d have so much money they could then become professors or legal-services lawyers or whatever they’d wanted to be in the first place. That’s when you started reading stories about the percentage of the graduating class of Harvard College who planned to go into the financial industry or go to business school so they could then go into the financial industry. That’s when you started reading about these geniuses from M.I.T. and Caltech who instead of going to graduate school in physics went to Wall Street to calculate arbitrage odds.”

“But you still haven’t told me how that brought on the financial crisis.”

“Did you ever hear the word ‘derivatives’?” he said. “Do you think our guys could have invented, say, credit default swaps? Give me a break! They couldn’t have done the math.”

Image Credit... Illustrations by Enid Noten

“Why do I get the feeling that there’s one more step in this scenario?” I said.

“Because there is,” he said. “When the smart guys started this business of securitizing things that didn’t even exist in the first place, who was running the firms they worked for? Our guys! The lower third of the class! Guys who didn’t have the foggiest notion of what a credit default swap was. All our guys knew was that they were getting disgustingly rich, and they had gotten to like that. All of that easy money had eaten away at their sense of enoughness.”

“So having smart guys there almost caused Wall Street to collapse.”

“You got it,” he said. “It took you awhile, but you got it.”