Andrew Ross Sorkin...

...provides perhaps the most damning information so far about Paul Ryan in his Times column this morning (my emphasis): 

Mr. Ryan also bucked the conventional Wall Street wisdom on how to deal with the debt ceiling. Many investment managers are wringing their hands about the uncertainty that the debate over the “fiscal cliff” is creating for markets. Last year, three months before the debt ceiling debate reached a peak, Mr. Ryan said that he was prepared to let the government default on its debt for at least several days if it would force Democrats to accept deeper cuts.

This is not a serious man.