Question for Brad DeLong and the Debt School of the Downturn: What Would Our Saving Rate Be If We Didn't Have Debt?

Brad DeLong tells us that he is moving away from the cult of the financial crisis (the weakness of the economy in 2014 is somehow due to Lehman having collapsed in 2008 -- economists can believe lots of mystical claims about the world) and to the debt theory of the downturn. Being a big fan of simplicity and a foe of unnecessary complexity in economics, I have always thought that the story was the lost of housing wealth pure and simple. (And yes folks, this was foreseeable before the collapse...