"The value of toxic asset-backed securities remains a mystery because information on the underlying loans and ongoing viability of those loans and the securities themselves was not collected consistently and even if it had been, it would not have been in a usable, portable form." [more]
A Very interesting read about the guy who programmed the software to turn Mortgages into bond's. How he feels about what he did etc. etc. just an interesting read guys. Well worth it.