Could Wall Street’s role in creating the recent financial crisis boil down to something as simple as a conditioned reflex? Apparently so, according to William D. Cohan, a former investment banker. Cohen writes: Wall Street “rewards bankers and traders for the revenue they generate by constantly selling whatever comes across their desks, regardless of its quality, is terribly, terribly broken. People are simple: They do what they are rewarded to do, and they will continue to do that over and over again until they are rewarded to do something else.” “Cohan: Wall Street Confesses to Bonus Culture Ills.”