It’s been two years since Lehman Bros. Holdings Inc. filed the largest bankruptcy in U.S. history, and the subject still provokes passionate debate.

Was the crash of 2008 inevitable? What if the government had bailed out Lehman the way it did other companies before and after it let the investment bank go? And, most recently, would the Dodd-Frank financial reform law(pdf) have prevented the excesses that led to Lehman’s demise?