(NewYorker.com) — A major Wall Street firm is accused of misleading clients by concealing key conflicts of interest. E-mails suggest that an employee touted its wares in public while slamming them in private. The scandal is front-page news, and observers anticipate severe damage to the firm’s reputation. We could be talking about Goldman Sachs today. But we could also be talking about Citigroup or Merrill Lynch in 2002, after the tech bubble burst. Then there was widespread anger at banks’ dodgy practices and reckless behavior, and an insistence that investors and regulators needed to be more vigilant. So why are we going through this all over again?