Why are people trying to rewrite the history of the crisis? Some are simply trying to save face. Interest groups who advocate for deregulation of the finance sector would prefer that deregulation not receive any blame for the crisis. Some stand to profit from the status quo: Banks present a systemic risk to the economy, and reducing that risk by lowering their leverage and increasing capital requirements also lowers profitability. Others are hired guns, doing the bidding of bosses on Wall Street. They all suffer cognitive dissonance — the intellectual crisis that occurs when a failed belief system or philosophy is confronted with proof of its implausibility. And what about those facts? To be clear, no single issue was the cause. Our economy is a complex and intricate system. What caused the crisis? Look: Fed Chair Alan Greenspan dropped rates to 1 percent — levels not seen for half a century — and kept them there for an unprecedentedly long period. This caused a spiral in anything priced in dollars (i.e., oil, gold) or credit (i.e., housing) or liquidity driven (i.e., stocks). Low rates meant asset managers could no longer get decent yields from municipal bonds or Treasurys. Instead, they turned to high-yield mortgage-backed securities. Nearly all of them failed to do adequate due diligence before buying them, did not understand these instruments or the risk involved. They violated one of the most important rules of investing: Know what you own. Fund managers made this error because they relied on the credit ratings agencies — Moody’s, S&P and Fitch. They had placed an AAA rating on these junk securities, claiming they were as safe as U.S. Treasurys. Derivatives had become a uniquely unregulated financial instrument. They are exempt from all oversight, counter-party disclosure, exchange listing requirements, state insurance supervision and, most important, reserve requirements. This allowed AIG to write $3 trillion in derivatives while reserving precisely zero dollars against future claims. The Securities and Exchange Commission change the leverage rules for just five Wall Street banks in 2004. The “Bear Stearns exemption” replaced the 1977 net capitalization rule’s 12-to-1 leverage limit. In its place, it allowed unlimited leverage for Goldman Sachs, Morgan Stanley, Merrill Lynch, Lehman Brothers and Bear Stearns. These banks ramped leverage to 20-, 30-, even 40-to-1. Extreme leverage leaves very little room for error. MORE AT THE LINK.