mr. barthold, thank you again. let me focus on a couple things. quite a bit about the buffet rule that someone like mr. buffet, one of the wealthiest men in the world, pays at a lower rate of taxation than does his secretary. could you tell us a little bit about the features of the tax code that make something like this possible, that someone making so much money, not a millionaire, but a billionaire, could actually have an effective tax rate that's lower than his secretary? >> okay. i assume what mr. buffet's referring to is his average tax rate which is the total amount of tax that he pays over his total amount of income, although it's possible he could be referring to the marginal tax rate. i'm honestly not clear on what he's claiming, but let's assume that his secretary is paid less than approximately $106,000 a year, so that would mean that the secretary is subject to the individual income tax rate and is subject to the payroll tax rate. i don't know what salary he's paid, but his total income is not all subject, the social security part of p