What metaphors are used in Liar's Poker: Rising Through the Wreckage on Wall Street by Michael Lewis?

In the section titled, The Salomon Diet, the metaphor of a bicycle built for two ad run in the Wall Street Journal shows a fat man on the front seat slumping and exhausted and a thin man on the rear seat pedaling energetically. Ironically, the collateralized mortgage obligation Salomon created to overcome mortgage inefficiency in 1983 is the instrument that dominates the mortgage market in 1986.