The NewsMain Streeters are sanguine. The money men are sounding alarms.The gloomiest voices at Semafor World Economy in Washington, DC, last week belonged to the financiers. Citadel Securities President Jim Esposito, whose firm facilitates one in four US stock trades, warned of a “breakdown in discipline.” His diagnosis: “We’ve raised a generation of investors that really never learned the price of being wrong.” They bought the dip, and were eit…