. >> more commonalities or differences, he mentions that trum ee ee eel trump is virtual talking abouthe hedge fund loophole and hearing ben carson saying he would go to a flat tax of an undetermined rate and get rid of all the deductions, is that politically plausible? >> not all tax plans that are produced in primariesare necessarily politically plausible but they do tell you about the kind of broader vision that the candidate is astousing and none of the things i examined or looked through are necessarily filled with the sort of detail that you would see in a real legislative text. that said, dr. carson has been unusually low on specifics to the point that actually we haven't yet modelled any proposal of his because we are short on the details that we would need in order to do so. >> we will talk more about the scoring a little later in the program. gentlemen stay with us, one of the few moments where there was some kind of attempt to hold a sustained give and take on a pressing issue was on social security and medicare, we will take a look at current gop thinking on the two massive