GRETCHEN MORGENSON is a business reporter and writes the Fair Game column at The New York Times, where she also serves as assistant business and financial editor. She was awarded the Pulitzer Prize in 2002 for her "trenchant and incisive" coverage of Wall Street. Prior to joining the Times in 1998, she worked as a broker at Dean Witter in the 1980s, and as a reporter at Forbes, Worth, and Money magazines. She lives with her husband and son in New York City. JOSHUA ROSNER is a partner at independent research consultancy Graham Fisher and Co. and advises global policy-makers and institutional investors on housing and mortgage-finance issues. He was among the first analysts to identify operational and accounting problems at the GSEs (government-sponsored enterprises) and one of the earliest to identify the peak in the housing market, the likelihood of contagion in the credit rating agencies' CDO assumptions. He lives with his son in New York City.