In Michael Lewis's book "Liar's Poker," the character Donnie Green is portrayed as a seasoned trader who has navigated the complex world of finance. His experience at Salomon Brothers reflects a time when trading was characterized by a more rugged and daring approach, contrasting with today's more regulated environment.

Green's history serves as a reminder of the evolution of trading practices and the changing culture in financial institutions. The metaphorical description of traders from that era highlights their boldness and risk-taking nature, suggesting a bygone age of less caution and more aggressive strategies.