As every frustrated American knows, no major banking executive has gone to prison or has been fined any significant amount in the aftermath of the financial crisis. But what’s astonishing is that Wall Street bankers seem not to have paid any social cost either. They sit on corporate and nonprofit boards and attend functions and galas. They remain top Wall Street executives, or even serve as regulators. The nation’s prominent op-ed pages, talk shows and conferences seek their opinions. If you are rich, you must be intelligent. Your views must be worthwhile, never mind the track record.